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The Von Duprin 6216 electric strike is a Grade 1, fire-rated electric strike purpose-built for mortise locks with a 1-inch throw deadbolt on single door applications. It works across hollow metal, aluminum, and wood frame openings and ships standard in 24VDC fail secure configuration. Constructed entirely from stainless steel, it has been tested to over 250,000 cycles and holds at 1,500 lbs static strength. It directly retrofits the discontinued Folger Adam 310-3-1. If your project specifies a mortise lock with a deadbolt and requires remote access control, the 6216 is the strike that belongs on that door. Here is everything that affects the specification before the order is placed.

How an Electric Strike Actually Functions on a Mortise Door

Most specifiers understand what the 6216 does in principle. The detail that matters on a mortise application is understanding exactly what it controls and what it does not.

The 6216 replaces the fixed strike plate in the door frame. Instead of a stationary keeper, it uses a movable lip that releases via a solenoid when an access control signal is received, whether from a card reader, keypad, entry button, or access control panel. The door stays latched at all times. The outside lever cannot retract the latchbolt until the solenoid fires and the lip swings open. This means the mortise lock continues to function as a fully mechanical lock for any credential system that does not involve the strike, and access control is layered on top without replacing or modifying the lockset itself.

What makes the 6216 specific to the mortise deadbolt application is the keeper geometry and pocket depth. The strike is designed to accept a 3/4 inch throw latchbolt paired with a 1-inch throw deadbolt. The strike pocket insert accommodates different manufacturers' deadlocking trigger locations, which matters when the mortise lock on the schedule is a Sargent, Corbin Russwin, or Schlage rather than a Von Duprin body. The 9-inch by 1-3/8-inch faceplate fits standard ANSI frame prep, and the strike box is horizontally adjustable to compensate for door or frame misalignment that is common in field conditions.

The two-piece plug connector system is worth noting for installers. It allows the strike to be disconnected and reconnected during servicing without disturbing the frame wiring, which reduces the time and disruption of any maintenance call over the life of the hardware.

Voltage, Fail Mode, and Options: The Three Decisions Before You Order

Getting the 6216 specified correctly comes down to three decisions. Each one affects how the product is ordered and how it integrates with the access control system on site.

Voltage. The 6216 ships standard at 24VDC, drawing 0.33 amps continuous duty at 83 ohms. The 12VDC version draws 0.60 amps continuous at 21 ohms. The choice is determined by the power supply on the access control panel, not by the lock or the door. Confirm the panel output voltage before ordering. AC operation is available through the SO12 and SO24 rectifier kits, which install inline to the solenoid and convert AC to DC for panels that output AC rather than direct current.

Fail mode. Fail secure (FSE) is the factory standard. If fail secure, the strike lip stays locked when power is removed, meaning a power failure leaves the door secured. This is the correct configuration for offices, server rooms, interior security doors, and any opening where the code does not require the door to release on power loss. The fail safe (FS) configuration reverses this: power is applied to lock the strike, and the door releases when power is lost. Fail safe is used where fire code requires the door to unlock on alarm activation, typically stairwell reentry doors under IBC provisions. Building codes prohibit fail safe strikes on labeled fire door assemblies - and the 6216 carries a UL 10C fire rating, so this is not a theoretical concern. Both modes are field convertible with the parts provided. For a complete breakdown of when each applies across different door types, the fail secure vs fail safe guide on this site covers every scenario in detail.

Options. Four factory options change how the 6216 integrates with monitoring systems:

• DS (Dual Switch): Adds two SPDT contacts monitoring latchbolt insertion and strike lip status simultaneously. Specified whenever the access control panel needs to confirm the door is both closed and latched.

• DS-LC (Low Current Dual Switch): Same monitoring as DS but rated for 24VDC at 0.050 amp or less, for computer monitoring systems with low current switch inputs.

• EB (Entry Buzzer): Sounds when the fail secure strike is unlocked. Wired in parallel with the circuit and installed in the frame. Used where a visual indicator alone is not sufficient at the door.

• Allegion Connect: Factory-installed Molex connector compatible with Allegion Connect hinge wiring systems, simplifying wire routing across the door gap.

Why the Specification Decision Starts and Ends With the Supplier

There is a straightforward reason why sourcing Von Duprin hardware through an authorized Allegion dealer matters more on a product like the 6216 than it does on a standard mechanical lockset. The 6216 is a safety-critical component on an access-controlled opening. It carries fire-rated listings. It integrates with an access control system. And it has configuration options that determine how the door behaves during a power failure or fire alarm condition.

When any one of those variables is specified incorrectly, the problem does not surface at the time of purchase. It surfaces during a fire inspection, a building code review, or a security audit months later. At that point, the origin of the hardware matters: whether it came through official Allegion distribution with a valid warranty and current factory documentation, or through a grey-market channel with inventory of uncertain provenance and no warranty path.

American Locksets has been an authorized Allegion dealer since 2001. The 6216 we ship is current production, fully warranted, and comes with the documentation that AHJs and facilities managers require on controlled openings. Same-day shipping from multiple US warehouses means the hardware schedule is not held up on the supply side. And because the complete Von Duprin lineup is available through our electric strikes section, the full 6200 Series - including the 6211 for standard latchbolt applications and the 6216 for mortise deadbolt openings - can be sourced from a single order without splitting across multiple suppliers.

For projects where the 6216 ships alongside electronic hardware including power supplies, credential readers, and request-to-exit devices, that single-source advantage eliminates the coordination overhead of managing multiple delivery windows across different suppliers. When the project also includes Von Duprin exit devices on egress doors, our exit hardware section carries the complete panic device lineup that the 6216 frequently accompanies on the same hardware schedule. For the mortise and cylindrical locksets the 6216 serves, the full selection is available through commercial locks.

Call 877-471-4870 before the order is placed. We confirm the voltage, fail mode, and option configuration against the access control system before it ships, not after it arrives on site.

Conclusion

The Von Duprin 6216 is built for one specific application: access control on a mortise lock opening with a 1-inch throw deadbolt. Its fire-rated listings, Grade 1 construction, field-convertible fail modes, and 250,000-cycle durability make it the correct specification for that door type across new construction and retrofit projects. Get the voltage right by confirming the panel output. Get the fail mode right by checking the applicable code for the door type. Add the DS switch if the panel needs to monitor both latchbolt and strike status. American Locksets carries the complete Von Duprin 6216 line from authorized Allegion stock with same-day shipping. Browse the full product listing at americanlocksets.com or call 877-471-4870.

Frequently Asked Questions

What is the Von Duprin 6216 electric strike designed for? 

Mortise locks with a 1-inch throw deadbolt on single door applications, across hollow metal, aluminum, and wood frame types.

What voltage does the Von Duprin 6216 run on?

 24VDC at 0.33 amps is standard. 12VDC at 0.60 amps and AC operation with rectifier kits are available options.

Is the 6216 fail secure or fail safe? 

Fail secure is the factory standard. Fail safe is available but is prohibited on labeled fire door assemblies per building code.

What does the DS switch option do on the 6216?

 It adds dual monitoring contacts: one for latchbolt insertion into the strike pocket, one for strike lip position - open or closed.

What discontinued model does the 6216 replace? 

The Folger Adam 310-3-1. The 6216 is the direct replacement for that application.

Is the Von Duprin 6216 fire rated? 

Yes. It is UL 1034 burglary-resistant listed and UL 10C fire-rated. It also meets ANSI/BHMA Grade 1.

Where can I buy the Von Duprin 6216?

 American Locksets carries the full 6216 line at americanlocksets.com/von-duprin-6216-electric-strike-for-mortise-locks. Call 877-471-4870 to confirm your configuration.

A door knob latch is the spring-loaded bolt inside a knob or lever lockset that holds a door closed every time it shuts. It retracts when the knob is turned and extends automatically when the door is released. On a standard interior door, this sounds straightforward. On a commercial door, a fire-rated assembly, or the inactive leaf of a double door, the latch type, throw length, and deadlocking capability directly affect whether the door works correctly and passes code inspection. Choosing the wrong latch costs money twice: once when it is installed and again when it has to be replaced. This guide covers every type, where each one belongs, and what to check before ordering.

How a Door Knob Latch Actually Works

The latch bolt is the beveled, spring-loaded component that sits inside the door edge. The bevel faces the strike plate so the door can close without any manual action. When the knob or lever is turned, the latch retracts into the lock body, the door opens, and when it is released the latch extends again to hold the door in the closed position.

On most commercial-grade hardware, the latch assembly includes two components working together: the main latch bolt and an auxiliary deadlocking plunger. The auxiliary plunger is the smaller piece sitting next to the main bolt. When the door closes fully and the plunger presses against the strike plate, it locks the main latch bolt in position and prevents it from being pushed back by force or shimmed from the outside. This is a standard feature on Grade 1 commercial hardware and the primary reason commercial latches outperform residential ones in security applications.

Understanding this matters because when specifiers or facilities managers ask why a door was compromised, the answer is often that the auxiliary deadlocking plunger was not engaging correctly, either because the strike plate was misaligned or because a residential-grade latch without the auxiliary plunger was specified on a commercial door.

Types of Door Knob Latches and Where Each One Belongs

Not all bolts and latches serve the same purpose. Here is a plain breakdown of the main types and their correct applications:

Standard cylindrical latch bolt. The most common type. Spring-loaded, beveled, and field-reversible for left or right hand doors. Used on single doors with cylindrical or mortise locksets across residential and commercial applications. Every commercial version should include the auxiliary deadlocking plunger as standard.

Anti-friction latch bolt. Includes a small secondary roller or mechanism that reduces the resistance when the latch bolt contacts the strike plate. This type is specified on heavy doors, doors fitted with closers, and high-traffic commercial openings where repeated latch resistance causes the door to bounce back or fail to close fully over time. If a door with a closer is not latching consistently, the fix is usually swapping to an anti-friction latch rather than adjusting the closer.

Flush bolts (manual and automatic). These are not part of a knob or lever lockset. They are dedicated bolt hardware for the inactive leaf of a pair of doors, which has no frame to latch against. Manual flush bolts require someone to slide the bolt into position at the top and bottom of the door. Automatic flush bolts engage and retract when the active leaf opens and closes, removing the manual step entirely. On fire-rated door assemblies, automatic flush bolts are typically required because the inactive leaf must latch positively every time the door closes, regardless of whether anyone manually engages it.

Self-latching bolts. Similar to automatic flush bolts in function but with a different internal mechanism. The bolt extends automatically when the door closes and retracts when the active leaf is opened. Available for both wood and metal door applications.

Surface bolts. Mounted on the face of the door rather than being mortised into the edge. Visible, easy to install, and easy to replace in the field. Used on inactive leaves, gate doors, and applications where a flush installation is not practical. Available in standard configurations and in hurricane-code rated versions for specific jurisdictions.

Quick Reference: Which Latch Type for Which Door

Why Choose American Locksets

Twenty-four years in commercial door hardware changes how a supplier answers a specification question. When a contractor calls asking whether manual or automatic flush bolts are required on a fire-rated inactive leaf, we answer it before the order is placed, not after the hardware arrives on site and fails inspection.

Authorized dealer since 2001. Every latch, flush bolt, and surface bolt we ship comes through official distribution with a valid manufacturer warranty. The full range of bolts and latches we carry includes anti-friction dead latches for fire door pairs, automatic and manual flush bolt systems, self-latching bolt combinations for wood and metal doors, and surface bolts including hurricane-code rated configurations. That range matters when a hardware schedule includes multiple door types across a single project.

One order covers the full opening. The latch bolt on a commercial door rarely ships alone. It accompanies commercial locks, door hardware from the builders hardware section, door closers, and electric strikes on access-controlled openings. Sourcing all of it from one authorized dealer means one order, one shipment, and one point of contact when anything needs to be confirmed or corrected.

Same-day shipping from multiple US warehouses. Hardware schedule delays come from the supply side when a supplier has to source product from a single location. We ship same day from warehouses across the country. Free shipping on orders of $300 and above. Expedited options available when the installation timeline is tight.

Real product knowledge on every call. Call 877-471-4870 with the door type, material, and any code requirements. We confirm the correct latch specification before the order goes in, not after the crew is on site.

Conclusion

The door knob latch is a precise specification, not a generic component. The type of latch, whether it includes an auxiliary deadlocking plunger, whether the door is a single or paired opening, and whether the assembly is fire-rated all determine which product belongs on which door. Getting it right the first time prevents callbacks, code violations, and replacements that cost more than the original hardware. American Locksets carries the full range of commercial bolts and latches from authorized stock, with same-day shipping from US warehouses. Browse the full selection or call 877-471-4870 to confirm the right product for your project before ordering.

Frequently Asked Questions

What is a door knob latch? 

A spring-loaded bolt inside a knob or lever lockset that holds the door closed automatically when it shuts and retracts when the knob is turned.

What does the auxiliary deadlocking latch do?

 It prevents the main latch bolt from being forced or shimmed open when the door is fully closed. Standard on Grade 1 commercial hardware.

When is an automatic flush bolt required?

 On fire-rated inactive leaf doors, where the bolt must latch positively every time the door closes without manual action.

What is an anti-friction latch bolt for?

 Doors with closers and heavy commercial openings where standard latch bolt resistance causes the door to not close fully under repeated use.

What is the difference between a flush bolt and a surface bolt? 

Flush bolts are mortised into the door edge, recessed and clean. Surface bolts mount on the door face, visible and easier to install or replace in the field.

Does a commercial lockset include the latch bolt? 

Yes. Standard cylindrical and mortise locksets include the latch bolt. Flush bolts and surface bolts for inactive leaves are ordered separately.

Where can I buy door knob latches and flush bolts?

 American Locksets carries the full range at americanlocksets.com/bolts-and-latches with same-day shipping. Call 877-471-4870 to confirm availability.

The Von Duprin 7500/2 is a double cylinder mortise lock body designed to work directly with Von Duprin's 55, 88, 98, and 99 Series exit devices. The "2" in the model number means there is a key cylinder on both the inside and outside of the door, giving independent key control on each side. The exit device bar handles emergency egress at all times. The cylinders control the trim function only. If your project calls for key control from both sides of a door that also carries panic hardware, this is the correct lock body to specify. This guide explains how it works, where it belongs, and what to confirm before the order is placed.

What the 7500/2 Actually Does

The 7500 is Von Duprin's mortise lock body designed specifically for their exit device lineup. It is not a general commercial mortise lock adapted for exit device use. The geometry, latchbolt profile, and actuator cam interface are built to work with Von Duprin exit devices as a matched system.

The double cylinder configuration on the 7500/2 means both the inside and outside positions have a key cylinder. The outside cylinder controls outside trim access. The inside cylinder gives facilities personnel key control of the inside trim function without depending on the outside credential system. This is useful on doors where staff need to lock or unlock the inside trim independently, for example on a secure staff corridor in a hospital or a records room in a government facility.

The finish designation 32D refers to Satin Stainless Steel, also called US32D under ANSI finish standards. It is the most common finish on institutional and healthcare hardware because it resists corrosion, holds up under regular cleaning, and does not show wear after years of heavy use.

Where This Lock Body Gets Specified

The 7500/2 shows up most consistently on these opening types:

• Healthcare controlled corridors: Staff-only areas connecting to public egress routes, where both entry and inside trim control need to be key-managed.

• Government and institutional interior security doors: Openings where access from both sides is regulated but the door is also a required egress path and must carry rated exit hardware.

• High-security commercial interiors: Data centers, secure records rooms, and cash-handling areas where the occupancy and code provisions permit double cylinder control alongside panic egress.

• Correctional and detention facilities: Double cylinder interior doors are standard specification in these occupancies. The exit device provides the egress path regardless of cylinder position.

In all of these applications, the exit device handles egress. The 7500/2 cylinders control trim only. That is what makes the double cylinder configuration code-compatible on these doors.

What to Confirm Before Installation

The 7500 lock body is field reversible without removing it from the door. The 3/4 inch anti-friction latch bolt is also field reversible in place, which makes handing corrections straightforward on active job sites. The faceplate has an adjustable bevel that accommodates both flat and beveled door edges.

Three things to verify before installation begins:

Cylinder is not included. A 1-1/4 inch mortise cylinder with a straight cam is required for both the inside and outside positions. This is not the standard cam used in general commercial mortise applications. Order the correct cylinders at the same time as the lock body.

Function setting. The TP (thumbpiece) and K (key-only) functions are field selectable by adjusting a set screw inside the lock body. Confirm which function the hardware schedule calls for and set it before the exit device goes on the door.

Door clearance. The standard 7500 requires a minimum of 4-1/2 inches of door clearance. The SS7500 stainless and E7500 electrified versions require 4-11/16 inches minimum. Verify this against the door schedule before the hardware arrives.

7500/2 vs the E7500 Electrified Version

The standard 7500/2 is a purely mechanical lock body. No wiring, no power supply, no access control integration. It is the right choice when the exit device handles credential management through electrified trim or a separate reader, and the mortise lock body only needs to provide mechanical double cylinder control.

The E7500 is the electrified variant. It adds remote electrical control of the outside trim through an access control system or fire alarm. When the E7500 receives an unlock signal, the outside trim operates freely. The outside cylinder provides mechanical override. The E7500 is available in fail secure configuration and is used where codes permit locking but require electrical unlocking on fire alarm activation.

If the project uses electrified exit device trim for credential management and the inside also needs key control, the answer may be the standard 7500/2 paired with electrified exit device trim rather than the E7500. Confirm the access control and fire alarm integration requirements before finalizing the specification.

Compatible Exit Device Series

The Von Duprin 7500/2 is designed for use with:

55 Series and 88 Series. Classic Von Duprin exit device crossbars. The 55 is the narrow stile version. The 88 is the standard wide stile device. Both accept the 7500 mortise lock body for trim applications requiring outside cylinder access control.

98 Series and 99 Series. Von Duprin's primary heavy-duty exit device lines for commercial and institutional use. The 99 is the wide stile version. These are the most common pairing with the 7500/2 across healthcare, education, government, and institutional projects.

If the hardware schedule calls for a Von Duprin 98 or 99 Series device with mortise trim and double cylinder control, the 7500/2 is the lock body for that door.

Why Choose American Locksets

Twenty-four years in commercial door hardware is not a marketing line. It is the difference between a supplier who recognizes a model number and one who knows exactly which cylinder cam profile, which function setting, and which exit device pairing it belongs with before the question is even finished. When you are sourcing the Von Duprin 7500/2 for a controlled-access opening with exit hardware, that depth of product familiarity is not a nice-to-have. It is what keeps a hardware schedule moving.

Authorized Allegion Dealer Since 2001

Every unit of the Von Duprin 7500/2 we ship comes through official Allegion distribution with a valid manufacturer warranty and current factory documentation. Non-authorized sources carry no such guarantee. Grey-market hardware and discontinued stock look identical in a photograph and create real problems the moment a warranty claim needs to go somewhere.

Same-Day Shipping From Multiple US Warehouses

Hardware schedule delays almost never come from the job site. They come from the supply chain. We ship same day from multiple warehouse locations across the country, which means a contractor on the West Coast gets the same lead time as one in the Northeast. Free shipping applies on orders of $300 and above. Expedited options are available when a project cannot wait for standard transit.

30-Plus Brands, One Order

The 7500/2 does not ship alone on most projects. It goes alongside Von Duprin 98 or 99 Series exit devices, compatible mortise cylinders with straight cams, and often a full exit hardware package across multiple doors. We carry all of it:

• Full Von Duprin exit device lineup through our exit hardware section

• Compatible cylinders and cores through our cylinders, cores, and keys section

• Electric strikes, electronic hardware, and door closers to complete the opening

One order, one shipment, one invoice. That matters when you are coordinating delivery across a multi-door project on a schedule that does not move.

Real People Who Know the Product

If the hardware schedule has a specification question on the 7500/2 before the order goes in, call us. We confirm cylinder cam requirements, function settings, exit device compatibility, and finish availability before you commit to an order rather than after the hardware arrives on site.

Phone: 877-471-4870 Email: sales@locksearch.com Monroe, NY. Supplying contractors, facility managers, and specifiers across the USA since 2001.

Conclusion

The Von Duprin 7500/2 is the correct lock body for exit device openings that require key control from both sides of the door. Its double cylinder configuration, field reversibility, adjustable bevel faceplate, and direct compatibility with the 55, 88, 98, and 99 Series lineup cover the controlled-access applications where no other lock body fits the specification. Order the correct cylinder with a straight cam, confirm the function setting before the exit device goes on, and verify door clearance against the 4-1/2 inch minimum. American Locksets carries the complete Von Duprin 7500 family from authorized Allegion stock with same-day shipping from US warehouses. Browse the Von Duprin 7500/2 or call 877-471-4870 to confirm your specification before the order is placed.

Frequently Asked Questions

What does the 2 mean in Von Duprin 7500/2? 

It identifies the double cylinder configuration. Both inside and outside positions have a key cylinder for independent trim control on each side of the door.

Which exit devices are compatible with the Von Duprin 7500/2? 

The 7500/2 works with Von Duprin 55, 88, 98, and 99 Series exit devices on single and paired door applications.

Is a cylinder included with the 7500/2?

 No. A 1-1/4 inch mortise cylinder with a straight cam is required separately for both positions and is not included with the lock body.

Can the 7500/2 be reversed in the field?

 Yes. Both the lock body and the 3/4 inch latch bolt are field reversible without removing the lock from the door.

What is the difference between the 7500/2 and the E7500?

 The 7500/2 is a purely mechanical double cylinder lock body. The E7500 adds electrical control of the outside trim for access control and fire alarm integration.

What finish is the Von Duprin 7500/2 32D?

 32D is Satin Stainless Steel, ANSI finish designation US32D, the standard institutional finish for healthcare, government, and high-traffic commercial environments.

Where can I buy the Von Duprin 7500/2?

 American Locksets carries the Von Duprin 7500/2 from authorized Allegion stock with same-day shipping. Call 877-471-4870 or order directly from the product page.

When a standard electric strike is not enough for the application, specifiers turn to the 310/4. The Folger Adam 310/4 is an industrial-grade, 3-hour fire-rated electric strike designed specifically for rim panic devices with Pullman style latchbolts up to 3/4 inch. Built entirely from stainless steel, it handles high-abuse environments that would compromise lighter-duty strikes. Whether you are specifying a single door or the active leaf of a pair, the 310/4 is built to the exacting performance and code compliance standards that commercial projects demand. This guide covers what makes it the right choice and when to specify it.

What Makes the Folger Adam 310/4 the Right Spec for High-Abuse Rim Panic Applications

Most electric strikes are not built for the punishment that comes with rim exit devices on heavy-traffic commercial doors. The 310/4 is designed specifically for that punishment. Several features in its construction make it stand apart from standard strikes.

The entire unit is stainless steel. There is no painted steel casing, no plastic component, and no composite housing. The result is a strike that resists corrosion, stands up to repeated impact, and does not degrade in environments where temperature swings, cleaning chemicals, or moisture would compromise lesser hardware. Industrial facilities, correctional settings, and institutional buildings that specify this unit do so because replacing a failed strike mid-project is not an option.

The 310/4 includes a unique 3/4 inch face plate with an integrated 1/4 inch base shim. That shim can be removed in the field to accommodate rim exit devices with either a 1/2 inch or 3/4 inch throw latchbolt, without ordering a different model or sending hardware back. On active job sites, that field-adjustable configuration saves real time.

Strength ratings are not theoretical on this unit:

• Static strength: 1,500 lbs

• Dynamic strength: 70 ft-lbs

These figures hold across both fail secure and fail safe configurations. The PK keeper is standard, matched specifically to Pullman style latchbolts as found on rim exit devices from Von Duprin, Sargent, and similar manufacturers.

The 310/4 operates on 12VDC at 0.51 amps or 24VDC at 0.25 amps, continuous duty. It is field selectable between fail secure and fail safe, which means the correct configuration for any door type can be set during installation without returning to the supplier.

Why the 310/4 Belongs on Your Next Commercial Fire-Rated Opening

This is not a strike you use because it is available. You specify the 310/4 because it is the correct product for fire-rated rim panic device applications and there is no practical substitute that meets the same compliance requirements.

The 310/4 carries a 3-hour fire rating and conforms to NFPA 252, ASTM E152, and CAN4-S104/ULC-S104 standards. It is UL 1034 burglary-resistant listed, UL 294 sixth edition listed, and ANSI/BHMA A156.31 Grade 1 certified. It is also accepted by New York City, which has some of the most stringent compliance requirements of any jurisdiction in the country.

Every one of those certifications matters when your AHJ reviews the hardware schedule. A strike without the correct fire listing on a fire-rated opening is a code violation. A strike without the correct UL listing on a security-sensitive opening creates liability. The 310/4 covers both without requiring a secondary product.

For specifiers working on:

• Hospitals and healthcare facilities with secure corridor doors on fire-rated walls

• Government and institutional buildings requiring burglary-resistant listed hardware

• Schools with panic-hardware-equipped fire doors

• High-security commercial buildings in jurisdictions requiring NYC acceptance

• Industrial facilities with heavy-traffic egress doors

The 310/4 is the correct single-product answer. It does not require supplemental hardware to meet the listing requirements most of these applications demand.

The all-stainless construction also means no corrosion-related failures in facilities with regular wet mopping, chemical cleaning, or food service environments. Stainless steel at this grade does not rust, does not pit, and does not lose dimensional stability from temperature cycling. That matters on doors that are opened and closed hundreds of times a day for decades.

Conclusion

The Folger Adam 310/4 is not a general-purpose electric strike. It is an industrial-grade, fire-rated product built specifically for rim panic device applications where standard hardware cannot meet the load, environment, or compliance requirements. Static strength at 1,500 lbs, all stainless steel construction, field-selectable fail modes, and fire listings across UL, ANSI, NFPA, and ASTM standards make it the correct specification for demanding commercial openings. If your project has a fire-rated rim exit device door in a high-abuse environment, this is the strike to order. Browse the full Folger Adam 310/4 at American Locksets, authorized dealer since 2001, with same-day shipping from US warehouses.

Frequently Asked Questions

What latchbolt size does the Folger Adam 310/4 work with?

 It accommodates Pullman style latchbolts up to 3/4 inch. The removable base shim allows field adjustment for 1/2 inch or 3/4 inch throw without changing models.

What voltage does the 310/4 require?

 It accepts 12VDC at 0.51 amps or 24VDC at 0.25 amps. Both operate continuous duty. Voltage is specified at the time of order.

Is the Folger Adam 310/4 fire rated? 

Yes. It carries a 3-hour fire rating and conforms to NFPA 252, ASTM E152, and ULC-S104 standards. It is listed for use on fire door assemblies.

Can the 310/4 be used on a pair of doors? 

Yes. It is designed for single door openings or the active leaf of a pair equipped with a surface vertical rod exit device with Pullman latches.

What is the fail mode configuration on the 310/4? 

It is field selectable between fail secure and fail safe. The correct mode is set during installation to match the door type and applicable code requirement.

What certifications does the Folger Adam 310/4 carry? 

UL 1034 burglary-resistant, UL 294 sixth edition, ANSI/BHMA A156.31 Grade 1, NYC acceptance, NFPA 252, ASTM E152, and CAN4-S104/ULC-S104.

Where can I buy the Folger Adam 310/4? 

American Locksets carries the full 310/4 line from stock with same-day shipping. Browse the product page at americanlocksets.com or call 8774714870.

Let's get one thing out of the way first. Not all door locks with keypads are the same thing, and the reason so many buyers end up with the wrong product is that most guides treat them as if they are. A mechanical pushbutton lock on a storage room door and a networked electronic keypad on a hospital entry are both "keypad locks" on paper. In practice, they are completely different hardware solving completely different problems.

This guide covers every type of keypad lock available, what each one actually does, where it belongs, what to check before you buy, and which products are worth specifying. No brand partnerships, no filler. Just what you need to make the right call.

What is a Door Lock with Keypad?

A keypad door lock is any locking mechanism that uses a numeric or alphanumeric code to control access, either instead of a physical key or alongside one. The code is entered on a keypad mounted on the door, and the lock responds by releasing the latch or deadbolt to allow entry.

That sounds simple. The complexity starts when you realise keypad locks span three completely different categories:

• Mechanical pushbutton locks that run with no batteries and no electronics at all

• Standalone electronic keypad locks that run on batteries and store codes locally

• Networked keypad systems that connect to an access control panel and are managed centrally

Each category has its own use cases, its own strengths, and its own things that can go wrong. Understanding which one fits your door before you buy saves you from a costly swap later.

Type 1: Mechanical Pushbutton Keypad Locks

If you want zero maintenance, no batteries, and a lock that keeps working no matter what, a mechanical pushbutton lock is what you need.

These locks use a purely mechanical code entry system. You push a combination of numbered buttons in the correct sequence, and the door opens. There is no circuit board, no battery compartment, no app, and no connectivity. The Simplex line from Dormakaba is the most widely recognised example of this category and has been specified in commercial buildings for decades.

Where they belong:

Mechanical pushbutton locks are ideal for storage rooms, back-of-house entries, utility rooms, server closets, stairwells, and any door where you want code-based access but can't or don't want to deal with battery replacements or power supply. They are also the right choice in environments where electronics fail, including food processing areas with wash-down requirements, outdoor gates in harsh climates, and areas where water or chemical exposure is a risk.

What to know before you buy:

The trade-off is limited flexibility. Most mechanical pushbutton locks support only one active code at a time. You can change it, but you can't set up 20 different user codes or audit who entered when. If you need multiple users with individual codes, or you need an audit trail, you need an electronic lock. If you just need a simple shared code with zero maintenance, a mechanical pushbutton is hard to beat.

The Simplex 1000 series handles standard knob and lever door preps. The Simplex 8100 supports mortise lock bodies from BEST, Corbin Russwin, Medeco, Sargent, and Schlage, which makes it compatible with virtually any Grade 1 commercial door hardware already installed. Browse the Keypad and Prox Locks section to see the full mechanical pushbutton selection.

Type 2: Standalone Electronic Keypad Locks

Standalone electronic keypad locks are the most common type you will encounter for light commercial and residential applications. They run on standard AA batteries, store user codes in on-board memory, and do not require any wiring or connection to a central system.

The typical standalone electronic keypad lock supports anywhere from 10 to 500 user codes depending on the model, includes an auto-relock function after entry, and usually includes a conventional key override for emergency access. Battery life on current models is generally one to two years under normal use.

Where they belong:

These locks work well on office entry doors, apartment common areas, gym access points, small business entries, and any application where you want individual user codes but do not need centralised management. The Schlage FE575 is a good example for lighter-duty residential and light commercial use. The Alarm Lock Trilogy DL2700 series goes further, storing up to 2,000 user PIN codes plus up to 2,000 RFID card credentials and offering an audit trail of the last 40,000 events. That level of capability handles serious commercial access control requirements without requiring a network connection.

What to know before you buy:

Battery-powered standalone locks are the most flexible and easiest to install in the category. The catch is that code management is done at the lock itself, which becomes impractical when you are managing more than a few doors. If your building has 10 or more keypad locks, changing codes when a staff member leaves means walking to every door individually. That is where networked systems start making sense.

Also check the ANSI grade rating. A Grade 1 standalone electronic keypad lock is built for commercial use. Grade 2 is acceptable for residential use. Do not put a Grade 2 lock on a commercial door, regardless of how good the electronic features look on the spec sheet.

Type 3: Networked Keypad Systems

Networked keypad systems take the keypad credential and connect it to a central access control platform. The keypad at the door is a reader. The intelligence, the user database, and the access rules sit in the software.

The Schlage NDE series and the Allegion NDE wireless platform are common examples of mid-range networked solutions. Locks communicate over a wireless mesh network back to a gateway, and all access management is handled through cloud software. You add a user once in the software and their credential works at every door they are assigned to, instantly, without touching any lock.

Where they belong:

Networked keypad systems are the right choice for any facility with more than a handful of controlled doors, frequent staff changes, multiple-building operations, or compliance requirements that mandate access audit trails. Healthcare facilities, schools, universities, government buildings, coworking spaces, and corporate offices all benefit from centralised management. When a staff member leaves, you revoke access in the software and they are immediately locked out of every door simultaneously.

What to know before you buy:

The investment is higher upfront because networked systems involve not just the hardware but the software platform, infrastructure, and ongoing licensing in some cases. The return comes in operational efficiency. Facilities that previously spent hours rekeying locks every time staff changed now manage that change in under a minute.

Also understand the credential options. Most current networked keypad systems support PIN codes, RFID cards and fobs, mobile credentials via Bluetooth, and some support multiple credential types simultaneously at the same reader. A door that accepts PIN entry, a badge tap, or a phone credential gives you flexibility across different user preferences without changing the hardware.

Mechanical vs Electronic Keypad: How to Choose Quickly

If you are specifying multiple doors or need a quick decision framework, here it is:

Use a mechanical pushbutton lock when: the door is secondary access, you want zero maintenance, battery failure is a concern, or the environment is harsh.

Use a standalone electronic keypad when: you need multiple user codes, an audit trail, auto-relock, or individual credential management on a single door or small group of doors.

Use a networked keypad system when: you have multiple doors to manage, frequent user changes, compliance requirements, or you need real-time remote management.

The door type also matters. Outdoor doors need weather-rated keypads rated for the temperature range of your location. A keypad rated to minus 30 degrees Fahrenheit handles most North American climates. Standard indoor electronic keypads are not built for outdoor exposure and will fail.

Key Features to Check on Any Keypad Lock

ANSI/BHMA Grade Rating: Grade 1 for commercial and institutional. Grade 2 for residential. This covers mechanical strength, cycle testing, and security resistance standards. Do not skip this.

User code capacity: A lock that stores 10 codes is fine for a storage room shared by a small team. A lock storing 2,000 codes is what you need for a building with regular shift workers.

Audit trail: Any door in a regulated environment, a healthcare facility, a school, or a place handling cash or controlled substances needs an audit trail. Know how many events the lock stores and whether you can export the log.

Fail safe vs fail secure: For any electrically powered keypad lock, you need to confirm how it behaves when power fails. Fail secure stays locked. Fail safe unlocks. The right choice depends on the door type and your local building code. Fire-rated doors with electric strikes must be fail secure per NFPA 80. Stairwell reentry doors require fail safe under the 2024 IBC. If you are unsure, read our fail secure vs fail safe guide before specifying any electrified keypad hardware.

Request to Exit (REX): On doors wired to an access control panel, the REX function monitors the inside lever or a separate sensor to signal the panel when someone exits. This completes the audit trail. The Alarm Lock Trilogy series supports REX as a built-in option.

Weather resistance: Check the operating temperature range and the IP rating if the keypad is exposed to rain, dust, or humidity. Most quality commercial outdoor keypads are rated for minus 30 to 150 degrees Fahrenheit.

Key override: A physical key override cylinder is not optional on any door that serves as an emergency egress route or a critical building entry. Electronics fail. Batteries die. A key override is your backup.

Keypad Locks and ADA Compliance

Any keypad lock installed on a door required for accessible entry must meet ADA requirements. The force needed to activate the keypad keys should not exceed 5 pounds. Keypads should be mounted between 15 and 48 inches from the finished floor. Lever handles on the lock must return to within half an inch of the door face to comply with California and federal fire codes.

Most Grade 1 commercial keypad locks from reputable manufacturers are designed to meet these requirements. Confirm ADA compliance is stated in the product specifications before specifying on any public-access door.

Keypad Locks for Schools: Special Considerations

Schools have specific security requirements that go beyond standard commercial access control. After updated post-Sandy Hook security guidelines, classroom and entry doors in K 12 buildings are increasingly required to use intruder-resistant latchbolts. When specifying a keypad for a classroom door in a school setting, look for a function that deadlocks the latchbolt when the outside lever is locked so it cannot be shimmed or forced.

The Alarm Lock Trilogy series, the Schlage NDE, and keypad-capable mortise lock configurations using the Sargent 8238 function with compatible electronic trim all meet current school security guidance for various door types. Browse our Keypad and Prox Locks and Electronic Hardware sections for current school-suitable options.

Keypad Locks for Apartments and Multi-Tenant Buildings

Multi-tenant buildings present a specific challenge: frequent tenant changes mean frequent credential changes. Traditional keyed locks mean rekeying costs every time a tenant moves out. Keypad locks solve this because changing a code takes 30 seconds and costs nothing.

For apartments, the standalone battery-powered electronic keypad on the entry door combined with mechanical key access on the individual unit door is the most common setup. For buildings where common area access control matters, a networked keypad on the building entry with tenant-specific codes or fobs managed through software is the most scalable solution.

Key features to prioritise for multi-tenant use: high user code capacity, easy on-door code programming, and a durable weatherproof exterior keypad that handles frequent use without wear.

Where to Buy Keypad Door Locks

We carry the full range of keypad and proximity locks from stock, including mechanical pushbutton, standalone electronic, and networked systems from Alarm Lock, Schlage, Dormakaba/Simplex, PDQ, and other authorised brands. Same-day shipping from multiple US warehouses. Browse our Keypad and Prox Locks for the complete selection.

If you are working on a project and need help confirming the right function, grade, or configuration before ordering, call us at 877-471-4870. We have been supplying commercial door hardware since 2001. We can confirm availability and help you match the right keypad lock to your specific door type.

For related hardware that works alongside keypad locks on wired doors, also see our Electric Strikes, Electronic Hardware, and Magnetic Locks categories.

Frequently Asked Questions

What is the difference between a mechanical and electronic door lock with keypad?

A mechanical pushbutton lock uses purely physical components to verify the code and release the latch. There are no batteries, no circuit boards, and no electronics of any kind. An electronic keypad lock uses a battery-powered processor to verify the entered PIN, control the locking mechanism, and store multiple user codes. Mechanical locks offer zero maintenance and no battery dependence. Electronic locks offer more user codes, audit trails, and usually a key override cylinder.

How many user codes can a keypad door lock store?

It depends on the model. Basic mechanical pushbutton locks store one active code. Entry-level standalone electronic keypad locks typically store 10 to 20 codes. Mid-range commercial locks like the Alarm Lock Trilogy DL2700 store up to 2,000 PIN codes plus 2,000 RFID credentials. Networked systems connected to software platforms have essentially unlimited user capacity.

Can a keypad door lock work without electricity or batteries?

Yes. Mechanical pushbutton locks work entirely without power of any kind. Electronic keypad locks require batteries or hardwired power, but most include a physical key override that works even when batteries are dead. For any door where power reliability is a concern, confirm the lock has a key override before buying.

What happens to a keypad lock during a fire alarm or power outage?

It depends on the fail mode configuration. Fail secure locks stay locked when power is removed. Fail safe locks unlock when power is removed. The correct choice depends on the door type and local code requirements. Stairwell reentry doors under IBC 2024 require fail safe. Fire-rated doors with electric strikes require fail secure per NFPA 80. Read our fail secure vs fail safe guide for full details.

Are keypad door locks ADA compliant?

Grade 1 commercial keypad locks from reputable manufacturers are generally designed to meet ADA requirements, including 5-pound maximum activation force and lever handles that return within half an inch of the door face. Always verify ADA compliance is stated in the product specification before installing on any public-access door.

What is the best keypad lock for a commercial door?

For a standalone commercial application with no access control system, the Alarm Lock Trilogy DL2700 series is one of the most capable standalone keypad locks available, storing 2,000 user codes, supporting RFID credentials alongside PIN entry, and offering an audit trail of 40,000 events. For a door wired to an access control system, the Schlage NDE wireless platform or a keypad-capable electrified mortise lock function like the Sargent 8271 with compatible keypad trim are the appropriate specifications.

Can I add a keypad to an existing commercial lock?

In many cases, yes. If the existing lock is an electrified mortise or cylindrical lock, a compatible keypad reader can be added to the credential input side and wired to the lock's power supply. The specific compatibility depends on the lock model and the reader being added. Call us at 877-471-4870 with your existing lock model and we can confirm which keypad credential options work with it.

Published by the American Locksets Hardware Team. Authorized dealer of Alarm Lock, Schlage, Dormakaba, Sargent, and 30+ manufacturers since 2001. Monroe, NY. Call 877-471-4870 or browse americanlocksets.com.

If you have ever been handed a hardware schedule that says "Sargent 8204" on some doors and "Sargent 8237" on others, and you were not entirely sure what the difference was, you are in the right place. The Sargent 8200 Series is one of the most widely specified commercial mortise lock lines in the country, and it covers everything from a basic storeroom lock to a fully electromechanical fail secure unit integrated into an access control system. The number after "82" is the function code. Once you understand what each code means, the whole catalog becomes readable.

We have been supplying Sargent mortise locks since 2001. This guide covers the functions we sell most, what they do in plain terms, where they belong on a door schedule, and how to choose between the mechanical and electromechanical versions. No catalog jargon, no padding.

What Makes the Sargent 8200 Series Different

The 8200 Series is ASSA ABLOY's flagship commercial mortise line under the Sargent brand. It is certified to ANSI/BHMA A156.13 Series 1000 Grade 1 operational and security standards, UL and cUL listed for 3-hour fire doors, and independently tested to 16 million cycles. Those numbers mean it is built for the punishment of schools, hospitals, government buildings, and any other facility where a door gets used hundreds of times a day.

What makes it particularly useful for specifiers is the multi-functional lock body. A single lock body supports multiple function configurations, which reduces your inventory requirements when you are managing a large hardware schedule. The electromechanical versions add EcoFlex technology, which cuts power consumption by up to 96% compared to traditional solenoid locks. That translates to lower heat output at the lock, longer component life, and a smaller load on your power supply.

The line also suits with Sargent's 80 Series exit devices, P Series exit hardware, and DL Series tubular locks. If you are specifying a consistent lever style throughout a facility, you can run the same lever design from the mortise locks in the corridors through to the exit device trims on the egress doors.

The Most Common 8200 Series Functions Explained

Here is how the function codes actually translate into real-world door behavior. Each entry covers what the lock does, where it belongs, and what to watch for when specifying it.

8204: Storeroom or Closet Function

The outside lever is always locked. A key or an access control credential is required to enter from the outside. The inside lever is always free, so occupants can exit at any time. The latchbolt re-locks automatically when the key is removed.

This is the workhorse of commercial hardware schedules. You will find the Sargent 8204 on server rooms, storage closets, electrical rooms, and any space that stays locked except when someone with a key specifically needs it. It is a simple, reliable specification that almost never creates code complications because egress is always free from the inside.

8205: Office or Entry Function

The outside lever is normally operable from the outside without a key, but a key can lock it. When locked, the outside lever requires a key to operate. The inside lever is always free.

This one shows up on office entry doors and similar applications where the door is usually accessible but needs to be secured after hours or during specific periods. The key locks and unlocks the outside lever rather than overriding it the way a storeroom function works.

8215: Passage or Closet Function

Both levers always retract the latchbolt freely. There is no locking function on this model. The Sargent 8215 is a passage lock, meaning it holds the door closed but does not lock it.

It gets specified on interior corridors, conference rooms, and spaces that need a proper mortise case for durability but do not require any access control. The advantage over a simple passage cylindrical lock is that the 8215 gives you the same Grade 1 mortise body as the rest of the door schedule, which matters in high-traffic institutional environments where cheaper passage hardware fails quickly.

8237: Classroom Function

The outside lever normally retracts the latchbolt freely. A key in the outside cylinder locks the outside lever, preventing it from operating without a key. The inside lever is always free. The key also retracts the latchbolt from the outside when inserted.

The Sargent 8237 is the standard K-12 and higher education classroom lock. The teacher uses a key from the outside to lock the room for lockdown, then removes the key and exits. Students inside can always open the door from the inside, which keeps egress compliant during an emergency.

If your project is a school built or renovated after the 2013 Sandy Hook advisory guidelines were issued, look at the 8238 before finalizing the spec. The reason is explained in the next entry.

8238: Classroom Security Intruder Function

This is the 8237 with an important upgrade. When the outside lever is locked by key, the latchbolt is deadlocked. That means it cannot be pushed back by force or shimmed from the outside. On a standard 8237, the latchbolt can theoretically be defeated by a determined person with a credit card or a shimming tool. The 8238 closes that vulnerability.

Most updated school security codes and recommendations now specify an intruder-resistant latchbolt function for classroom doors. If the hardware schedule you are working from was written before 2015, check whether it calls for 8237 or 8238. A lot of legacy specs still list the standard classroom function. Swapping to 8238 usually costs the same and is the stronger security choice for any new school construction or renovation.

8266: Privacy or Bath/Bedroom Function

The inside thumbturn locks the outside lever. An emergency release or a key from the outside can override the privacy lock. The inside lever is always free.

The Sargent 8266 is the right call for restrooms, single-occupancy bathrooms, private offices, and hotel rooms. The occupant pushes the thumbturn to lock from the inside, and the outside lever is disabled until the thumbturn is released or a key is used. It is simple, familiar behavior that most building users understand without instruction.

One thing to confirm on healthcare projects: some behavioral health applications require a specific privacy override that allows staff to enter with a coin or tool rather than a cylinder key. Check the 8200 Series catalog for available emergency release options on the 8266 if your project has those requirements.

8271: Electromechanical Fail Secure Function

The outside lever is locked until an access control signal applies power to unlock it. When power is applied, the outside lever operates normally. When power is removed (or fails), the outside lever stays locked. The inside lever is always free for egress. This is the fail secure configuration.

The Sargent 8271 is the most commonly specified electromechanical Sargent mortise lock for access-controlled commercial doors. Offices, labs, secure storage areas, and any door wired to a card reader or remote release will typically use the 8271. The fail secure behavior means a power outage does not create an open door into a secure area.

It operates on 12 or 24VDC and features EcoFlex technology. You can add an RX (request to exit) option by specifying the RX prefix, which monitors the inside lever and signals your access control panel when someone exits. The electromechanical versions are field selectable between fail safe and fail secure, so if a door's fail mode requirement changes during construction, you do not need to swap the lock.

8270: Electromechanical Fail Safe Function

The fail safe counterpart to the 8271. Power is applied to keep the outside lever locked. When power is removed or fails, the outside lever unlocks. This is the fail safe configuration.

The Sargent 8270 belongs on stairwell reentry doors, elevator lobby exit access doors, and any other opening where a building code requires the lock to unlock on fire alarm or power loss. The 2024 IBC specifically requires fail safe locks on stairwell reentry doors. If you are specifying any of those door types, the 8270 is the function you need.

For a deeper look at how fail safe and fail secure differ and which code applications require each, read our guide on fail secure vs fail safe locks.

Mechanical vs Electromechanical: How to Choose

The straightforward answer is: if the door is wired to an access control system, reader, or remote release, you need an electromechanical function (8270 or 8271). If the door only uses physical keys and has no electronic component, the mechanical functions (8204, 8237, 8266, and so on) are the right choice.

In practice, a lot of projects mix both. A typical office building might have electromechanical 8271 locks on the main entry and secure areas, mechanical 8204 locks on storage rooms and utility closets, and mechanical 8237 locks if there are classroom or training spaces. The 8200 Series lock body supports all of these functions, which is exactly why specifiers standardize it for entire door schedules rather than mixing brands.

One thing worth knowing about the electromechanical versions: they run on 12 to 24VDC and auto-detect the voltage. The EcoFlex solenoid uses much lower power than older 8200 Series electromechanical versions, which means the lock runs cooler and a single power supply can support more locks on the same circuit. If you are retrofitting older Sargent electromechanical mortise locks, the current 8270 and 8271 are significantly more efficient than what you might be replacing.

Key Specs at a Glance

• ANSI/BHMA certification: Grade 1 operational and security (A156.13 Series 1000)
• Fire rating: UL/cUL listed for 3-hour fire doors, single 4x10 ft, pairs 8x10 ft
• Cycle testing: 16 million cycles (UL Cycle Above and Beyond, Verification ID V584148)
• Electromechanical voltage: 12VDC or 24VDC regulated (auto-detect on current models)
• Power consumption: EcoFlex technology reduces consumption by up to 96%
• Door thickness: 1-3/4 inch standard, minimum 1-3/8 inch
• Stile requirement: 4-1/2 inch minimum for mechanical, 4-3/4 inch minimum for electromechanical
• Cylinder compatibility: Degree, Signature, KESO, XC key systems; SFIC and removable core available
• Lever designs: 6 designs available
• Finishes: 14 architectural finishes
• Functions available: 58 functions including mechanical, electromechanical, security, and monitoring

Suiting the 8200 Series Across a Full Door Schedule

The lever designs available for the 8200 Series also work with Sargent's 80 Series and P Series exit devices, and with the DL Series tubular locks. That means on a project where you want a single lever style throughout the building, you can specify the same lever from the mortise locks in the corridors all the way through to the panic hardware on the exit doors.

This matters practically on healthcare and education projects where architects specify lever consistency as a design requirement. It also simplifies maintenance because facilities staff only need to recognize one hardware family.

If your project includes electrified exit hardware at the egress doors, the Sargent 8270 or 8271 at the entry doors, and mechanical 8237 locks at the classrooms, you have a fully integrated Sargent hardware package that uses a single key system and a consistent lever style throughout. Browse our full Sargent mortise lock selection and exit hardware to see the complete line.

Which Function Goes Where: A Quick Reference

Server room, secure storage, records room: Sargent 8204 (mechanical storeroom) or Sargent 8271 (electromechanical fail secure if wired to access control)

Standard office entry, general commercial entry: Sargent 8205 (office/entry) or Sargent 8271 (electromechanical fail secure for card-reader-controlled entry)

Interior corridor, conference room, non-lockable space: Sargent 8215 (passage function)

K-12 classroom (pre-2015 spec or standard): Sargent 8237 (classroom function)

K-12 classroom (current construction or renovation): Sargent 8238 (intruder-resistant classroom function)

Restroom, single-occupancy bath, private office, hotel room: Sargent 8266 (privacy function)

Access-controlled door, fail secure required: Sargent 8271 electromechanical

Stairwell reentry door, elevator lobby (IBC 2024): Sargent 8270 electromechanical fail safe

Frequently Asked Questions

What is the Sargent 8204 mortise lock used for?

The 8204 is a storeroom or closet function lock. The outside lever is always locked and only operates by key or access control credential. The inside lever is always free for egress. It belongs on any door that must stay locked from the outside at all times, including storage rooms, server closets, and utility spaces. Browse the Sargent 8204 in our inventory.

What is the difference between the Sargent 8237 and 8238 classroom lock?

The 8237 is the standard classroom function. The 8238 adds an intruder-resistant deadlocked latchbolt: when the outside lever is locked by key, the latchbolt cannot be pushed back or shimmed from the outside. For current school construction or renovation, the 8238 is the stronger specification and is what most updated security guidelines recommend.

What is the Sargent 8271 fail secure lock?

The 8271 is the electromechanical fail secure function. Power applied to the lock unlocks the outside lever. If power fails, the outside lever stays locked. The inside lever is always free. It runs on 12 or 24VDC and is the standard specification for access-controlled commercial doors. See our Sargent 8271 product page.

What is the difference between the Sargent 8270 and 8271?

The 8270 is fail safe: power keeps it locked, so power loss unlocks it. The 8271 is fail secure: power unlocks it, so power loss keeps it locked. For standard access-controlled commercial doors, the 8271 is almost always correct. The 8270 belongs on stairwell reentry doors and elevator lobby exit access doors where the IBC requires the lock to open on fire alarm. Our fail secure vs fail safe guide explains the full code requirements.

What does the Sargent 8266 do?

The 8266 is the privacy function. The inside thumbturn locks the outside lever. A key or emergency release from the outside overrides it. The inside lever is always free. It is used on restrooms, private offices, and hotel rooms. See the Sargent 8266 in our catalog.

Is the Sargent 8200 Series fire rated?

Yes. The 8200 Series is UL and cUL listed for 3-hour fire doors on single doors up to 4 by 10 feet and pairs up to 8 by 10 feet. The fire listing appears as the letter F and UL symbol on the armored front of the lock. All electromechanical versions carry the same fire rating.

Where to Find Sargent 8200 Series Hardware

We carry the full Sargent 8200 Series line from stock, including mechanical and electromechanical functions in multiple finishes. Same-day shipping from US warehouses is available on most items. We are an authorized ASSA ABLOY dealer and have been supplying commercial locks and electronic hardware to contractors, facility managers, and specifiers since 2001.

If you are working from a project spec and need to confirm availability on a specific function or finish combination before committing to an order, call us at 877-471-4870 or browse our Sargent mortise lock inventory directly.

For related reading, see our guides on the Schlage L Series mortise locks and fail secure vs fail safe locks.

Why Choose American Locksets

Buying commercial door hardware online is easy. Finding a supplier who actually knows what they are selling is harder. Here is what makes American Locksets different from a generic online retailer.

We Have Been Doing This Since 2001

We started supplying commercial locks in 2001 and have been an authorized dealer of Sargent, Schlage, Von Duprin, Corbin Russwin, Stanley BEST, Falcon, Alarm Lock, and more than 30 other manufacturers ever since. That is not a marketing claim. It means every product we ship comes through official distribution channels with full manufacturer warranties. When you order a Sargent 8271 from us, you get the current production version with the EcoFlex solenoid, the full ASSA ABLOY warranty, and the support that comes with buying from an authorized source.

If a lock fails on a project and you need a warranty claim handled, that distinction matters more than most buyers realize until it happens to them.

Same-Day Shipping From Multiple US Warehouses

We ship same day from multiple warehouse locations across the country. For a contractor running a tight installation schedule, hardware that ships from a single East Coast warehouse and takes five days to reach a job site in Arizona is a real problem. We built our logistics around that reality.

Free shipping applies to all orders of $300 and up. Expedited delivery is available when a project timeline cannot wait for standard transit. Call us at 877-471-4870 to confirm cut-off times and shipping options before you place an order.

4.81 Stars From Real Commercial Buyers

We have more than 430 verified customer reviews on Reseller Ratings with an average score of 4.81 out of 5. The people writing those reviews are mostly commercial contractors and facility managers, not one-time residential buyers who ordered a single deadbolt. The consistent feedback covers order accuracy, correct product shipped, and fast delivery. You can read every review at our customer reviews page.

We bring this up because in commercial hardware, a wrong item or a delayed shipment on a critical door costs real money. Our track record is public and verifiable.

30 Plus Brands, One Order

Most commercial projects need more than one brand. A typical office building might have Sargent mortise locks at the entries, exit devices at the egress doors, electronic hardware and electric strikes at access-controlled openings, and door closers throughout. Ordering from four or five separate suppliers means four or five tracking numbers, four or five invoices, and multiple calls when anything goes wrong.

We carry all of it in one place. Sargent mortise locks, exit hardware, electronic hardware, electric strikes, door closers, cylinders and cores, and builders hardware. One order, one shipment, one point of contact.

Real People Who Know the Product

If you are working from a spec and you are not sure whether a particular Sargent function, finish, or voltage option is available before committing to an order, call us. We have been doing this for 24 years. We can confirm current stock, flag lead time issues on less common configurations, and make sure what ships matches what the spec requires. For reference on any electromechanical function questions, our fail secure vs fail safe guide covers the most common specification decisions in detail.

Phone: 877-471-4870 Email: sales@locksearch.com Monroe, NY. Serving contractors, facility managers, and specifiers across the USA since 2001.

Here is a question that comes up on nearly every commercial door project. You have got a door schedule in front of you, a spec budget to work with, and two lock types that both seem like they could do the job. So which one actually belongs on each opening?

After 25 years of shipping commercial door hardware to contractors, facility managers, and locksmiths across the United States, we have matched thousands of locks to thousands of doors. The mortise vs. cylindrical question is not complicated once you understand what each lock is actually built for. This guide gives you the complete picture: how each system works, what the ANSI grades mean in practice, which applications demand one over the other, brand and model recommendations, and a clear decision framework you can apply to any door schedule.

How a Mortise Lock Is Built

A mortise lock lives inside a rectangular pocket cut into the door edge. That pocket is called the mortise, and it is where the lock gets its name. The lock body is a self-contained steel case that houses the latch bolt, deadbolt, and internal mechanism all in one reinforced unit. Trim — the lever or knob on each side — attaches to the case through the door face and is secured with through-bolts that run the full thickness of the door.

Because the lock body is embedded in the door, it is surrounded and protected by the door material on all sides. When force is applied to a mortised door — a kick, a shoulder, or a forced entry attempt — the stress distributes across the entire box case and the door structure around it. This is the engineering reason that mortise locks outlast cylindrical locks on high-abuse doors. The mechanism is protected, not exposed.

Mortise locks are governed by ANSI/BHMA A156.13. Commercial Grade 1 mortise locks from major manufacturers are built to survive 1 million operating cycles and withstand 10 blows of 75 foot-pounds to the strike. That is the test floor. Well-made products from Schlage, Sargent, and Corbin Russwin exceed it in practice.

How a Cylindrical Lock Is Built

A cylindrical lock installs through two bored holes in the door face: a 2-1/8 inch cross-bore for the chassis and a 1 inch edge bore for the latch. The mechanism is more compact than a mortise lock. The latch and springs sit in a chassis inside the cross-bore, and the levers attach to the door face on rose plates rather than a full escutcheon.

Cylindrical locks are governed by ANSI/BHMA A156.2 and are available in Grade 1, 2, and 3. The grade matters enormously. A Grade 1 cylindrical lock from Schlage (ND Series) or PDQ (GT Series) is a serious commercial product that handles high-cycle commercial door use. A generic or budget Grade 1 label on a discount product is not the same thing. The ANSI grade sets a minimum, not a ceiling.

The installation advantage is real. A trained installer can hang a cylindrical lock on a pre-drilled door in about 20 minutes. Mortise prep on a new door takes considerably longer. On a retrofit project where the door already has a cross-bore, a cylindrical lock is often the correct choice for that reason alone.

What ANSI Grade 1 Actually Means on a Job Site

Both mortise and cylindrical locks are available in ANSI Grade 1. But Grade 1 on a mortise lock and Grade 1 on a cylindrical lock are not identical products in terms of structural protection. The grades describe performance minimums under testing conditions. They do not describe the lock's inherent structural design.

For cycle life on a high-traffic commercial door, Grade 1 means survival to 1 million cycles. At 300 uses per day on a busy office corridor door, that is roughly 9 years of theoretical cycle life. A Grade 2 cylindrical lock rated to 250,000 cycles hits its limit in about 2 years under the same conditions. The math is unforgiving, and it is the main reason Grade 2 hardware should never appear on a primary commercial entry, corridor, or egress door.

Grade 1 on all primary commercial doors is not a premium upgrade. It is the baseline specification.

Why Mortise Locks Are the Correct Choice

High-Traffic Institutional Doors

Any door that sees more than 200 uses per day belongs in mortise territory. Schools, hospitals, government buildings, and university facilities specify mortise locks on corridor and classroom doors because the locked body distributes wear across a larger, heavier mechanism. The result is longer service life and less maintenance over the building's life.

The Schlage L9070 (classroom function) and Sargent 8265 (office function) are among the most widely specified mortise locks for institutional applications. Both are Grade 1, both support interchangeable core compatibility, and both have 25-year track records in demanding institutional environments.

Doors Requiring Integrated Deadbolts

Mortise locks with the right function code include both a latch bolt and a deadbolt in a single case, controlled by one lever action for egress. This satisfies single-action egress requirements cleanly without a second bored hole for a separate deadbolt.

Electrified Access Control Applications

When a door goes into an access control system, mortise locks provide a wider range of electrification options than cylindrical locks. The larger case accommodates the solenoid or motor components needed for fail-safe or fail-secure operation without compromising the mechanical structure. Our electrified mortise locks from Schlage, Sargent, and Corbin Russwin are purpose-built for this application. If you are also working through the fail-safe vs. fail-secure question on an access control project, our fail-safe vs. fail-secure guide covers that in full detail.

Where Cylindrical Locks Make More Sense

Interior Private Offices and Secondary Corridor Doors

Not every commercial door needs a mortise lock. Interior private offices, break rooms, conference rooms, and secondary corridors with light traffic are well-served by Grade 1 cylindrical locks. The cost difference is real: quality Grade 1 cylindrical hardware runs $150 to $350 per opening versus $300 to $600 or more for Grade 1 mortise. On a 150-door mixed-use office building, that arithmetic matters, and many of those interior doors do not need the abuse resistance of a mortise lock.

Retrofit Projects Without Mortise Prep

If the door already has a 2-1/8 inch cross-bore and no mortise pocket, staying cylindrical is the right call. Patching a bore hole and cutting a new mortise pocket adds cost, takes time, and produces a cosmetically inconsistent door edge. A Grade 1 cylindrical lock on a properly reinforced frame with a security strike and 3-inch frame screws is a solid security upgrade on an existing installation.

Facility-Type Decision Framework

This is the section most hardware guides skip. Here is what 25 years of shipping to real projects actually looks like in practice.

Schools: Mortise Grade 1 on all corridor and classroom doors. Schlage L9070 or Sargent 8265 for classroom function. Grade 1 cylindrical acceptable on interior secondary doors with IC cores for district-wide key control.

Healthcare: Mortise Grade 1 on patient room, staff area, and high-traffic corridor doors. Corbin Russwin ML20936 or Schlage L9456 with occupancy indicators for patient rooms. Pharmacy and server rooms need fail-secure electrified mortise, not fail-safe.

Office Buildings: Mortise Grade 1 on lobby and tenant entry doors with access control integration. Grade 1 cylindrical with IC cores on private offices — makes rekeying between tenants fast. Conference rooms: cylindrical Grade 1 privacy function.

Retail and Light Commercial: Grade 1 mortise or exit device on the front entrance depending on occupancy load. Cylindrical Grade 1 or 2 on interior and back-of-house doors based on traffic and security needs.

The full range of commercial locks for all these applications is available across every major brand.

Brand and Model Recommendations

Best mortise locks for commercial use:

The Schlage L Series is the standard for extra-heavy-duty commercial applications. The L9000 Series covers over 40 functions. The Sargent 8200 Series is the primary alternative, particularly strong in healthcare. Corbin Russwin ML2000 Series covers the same function range and is preferred in many institutional specs. BEST 9K Series is the choice for facilities already invested in the BEST large-format interchangeable core system.

Best Grade 1 cylindrical locks for commercial use:

The Schlage ND Series is the most widely distributed commercial cylindrical line in the US. The ND80 (storeroom), ND70 (classroom), and ND50 (passage) cover the most common interior commercial functions. Sargent 10 Line and Corbin Russwin CL3300 Series are the specification alternatives. PDQ GT Series offers Grade 1 extra-heavy-duty performance at a budget-competitive price point.

For cylinder and core components including interchangeable core options for any of these lock bodies, our cylinders and cores section covers the full selection from Schlage, Sargent, BEST, and Falcon.

Electrified Variants: How the Choice Changes with Access Control

When a door goes into an access control system, the lock format decision takes on another layer. Electrified mortise locks offer a wider catalog of function configurations and cleaner mechanical integration for solenoid components than electrified cylindrical locks. The electrified cylindrical locks from Schlage, Sargent, and Falcon are capable products for medium-duty retrofit applications, but their function range is narrower.

For any new-construction project with access control as part of the spec, mortise is the correct mechanical foundation. For retrofits on existing cylindrical door preps with moderate security requirements, an electrified cylindrical lock is a legitimate and cost-effective choice.

The Most Common Spec Mistakes We See

Specifying Grade 2 cylindrical on high-traffic doors to cut cost. The labor cost of emergency hardware replacement in year two exceeds the upfront savings on the hardware every time. Grade 1 on primary doors is not optional.

Replacing a mortise lock with a cylindrical lock on an existing mortised door. This leaves a large rectangular pocket in the door edge that requires patching or a custom faceplate. If the door is mortised, put a mortise lock in it.

Ordering the wrong fail-safe or fail-secure configuration on electrified hardware. This mistake is covered in full in our fail-safe vs. fail-secure locks guide — required reading before any electrified lock order.

Not planning the IC core keying system before hardware ships. On a multi-door commercial project, an unplanned keying hierarchy creates a maintenance problem that compounds every year. Plan the master key structure first. Our cylinders and cores team can help you design a keying system that scales.

FAQ

Can you replace a mortise lock with a cylindrical lock?

You can, but it is not recommended without a good reason. Replacing a mortise lock with a cylindrical lock leaves a large rectangular pocket in the door edge. You either need a custom faceplate to cover the old mortise opening or you need to fill and refinish the door edge. If the door is already mortised, keep a mortise lock in it.

Is a mortise lock always more secure than a cylindrical lock?

Not automatically. A Grade 1 mortise lock is structurally superior due to its reinforced box case and integrated deadbolt options. But a Grade 1 cylindrical lock on a properly reinforced frame with a security strike outperforms a cheap Grade 2 mortise lock in most real-world scenarios. Grade matters more than format on a weak installation.

What ANSI grade should I specify for a school or hospital?

Grade 1 on all primary and corridor doors, without exception. The cycle life difference between Grade 1 and Grade 2 makes Grade 2 hardware on a high-traffic school or hospital door a false economy. It will fail prematurely and cost more to replace than the upfront savings.

How much more does a mortise lock installation cost versus a cylindrical lock?

On new-build doors without existing prep, mortise installation adds roughly $150 to $300 in labor per door. Hardware cost runs $300 to $600 for quality Grade 1 mortise versus $150 to $350 for Grade 1 cylindrical. Over a 10-year service life in a high-traffic environment, the mortise installation is often less expensive in total because it requires less maintenance and has a longer service life.

Do mortise locks work with access control systems?

Yes, and they are generally the preferred mechanical foundation for electrified access control on commercial doors. Electrified mortise locks from Schlage, Sargent, and Corbin Russwin are purpose-built for this integration. The larger case handles solenoid components cleanly without compromising the mechanical structure of the lock.

Ready to Spec Your Project?

We have been matching commercial hardware to door schedules since 2001. Whether you are specifying a 5-door tenant improvement or a 300-opening institutional project, we can review your door schedule and match every opening with the right lock type, function, grade, and finish.

Send your door schedule to sales@locksearch.com or use our quote request form and we will get you competitive pricing with same-day shipping from US warehouses. Free shipping on all orders over $300.

Here's something that trips up even experienced contractors. You're speccing out an access control project, the architect hands you a door schedule, and right next to the lock column it says "fail-secure." Or maybe it says "fail-safe." And you think you know the difference... but do you really?

After 24 years of selling electrified commercial door hardware to locksmiths, contractors, and facility managers across the US, we can tell you this: the fail-safe vs fail-secure question is the single most common point of confusion in access control hardware. Get it wrong, and you've got a fire code violation on your hands. Or worse, a door that won't secure properly during a power outage.

Let's clear it up once and for all.

What Does Fail-Safe Actually Mean?

A fail-safe lock unlocks when power is cut. Think of it this way. "Safe" refers to the safety of the people inside the building. If the power goes out, the lock releases so people can get out freely.

This makes fail-safe hardware the go-to choice for doors on fire-rated egress paths. When a fire alarm triggers or the building loses power, you don't want people trapped behind a locked door. The lock opens, the people exit. That's the whole point.

Common fail-safe products include electromagnetic locks (maglocks), certain electric strikes, and specific models of electrified mortise locks and electrified cylindrical locks.

Maglocks are the most obvious example. They need constant power to hold the door shut. The moment power drops, the magnetic field disappears and the door swings open. It's simple physics, and it's also why most fire codes allow maglocks on egress paths only with specific safeguards in place.

What Does Fail-Secure Mean?

A fail-secure lock stays locked when power is cut. Here, "secure" refers to the security of the building. If power goes out, the lock keeps the door secured from the outside, protecting whatever is on the other side.

But here's the critical part that gets missed. A fail-secure lock still allows free egress from the inside. You can always get out. The "locked" part only applies to the outside. Someone trying to enter from the corridor or exterior side won't be able to get in without a key or credential.

Fail-secure locks are common in storerooms, server rooms, pharmacies, and other spaces where maintaining security is more important than remote release capability. Products like the Corbin Russwin ML20906, Sargent 8271, and Schlage L9092 are among the most popular fail-secure electrified mortise locks we ship.

How to Decide: Fail-Safe or Fail-Secure?

The decision isn't about preference. It's driven by building codes, the door's location, and what's on the other side of it. Here's a practical breakdown that works in the real world.

Choose fail-safe when:

• The door is on a required fire egress path
• Building codes or the AHJ (Authority Having Jurisdiction) require it
• The door serves an area where people could be trapped during power failure
• You're using maglocks or electric strikes on exterior doors controlled by access readers

Choose fail-secure when:

• The door protects high-value assets (data centers, pharmacies, evidence rooms)
• Security during power loss is the primary concern
• The inside lever always allows free exit regardless of power status
• The door doesn't serve as a primary fire egress point

A real-world example. A hospital's main corridor doors? Fail-safe. The pharmacy inside that hospital? Fail-secure. The loading dock? Fail-safe. The IT server room? Fail-secure. Context determines everything.

What the Fire Code Actually Says

This is where it gets serious. The IBC (International Building Code) and NFPA 101 (Life Safety Code) both have clear requirements around electrified hardware on egress doors.

For doors in assembly occupancies (Group A) and educational occupancies (Group E) with an occupant load of 50 or more, latching hardware must be panic hardware or fire exit hardware. When you add electrification to these devices, you've got to think carefully about what happens during power loss.

Maglocks on egress doors require specific safeguards under IBC Section 1010.2.11 (2024 edition; this was numbered 1010.2.12 in the 2021 IBC, so check which edition your jurisdiction has adopted). The building must have an approved automatic sprinkler system, fire detection system, and the maglock must release on fire alarm activation, power failure, and sensor activation at the door. Also worth knowing: the 2024 IBC now prohibits sensor-release electromagnetic locking systems on doors that are required to have panic hardware. Those doors need a door hardware release system (like an RX switch in the panic device) instead.

If you're working on a project with fire-rated doors, the electrified hardware must be listed as fire exit hardware, not just standard panic hardware. Products like the BEST 45HW series and Falcon T881 are available in fire-rated configurations for exactly this purpose.

The bottom line? Always confirm with your local AHJ. Code requirements vary by jurisdiction, and some local amendments are more restrictive than the model codes.

Electrified Lock Types at a Glance

Not all electrified locks are created equal. Here's a quick rundown of the main types and when each makes sense.

Electrified Mortise Locks are the heavy hitters. Built into a pocket in the door edge, these Grade 1 locks handle the most demanding commercial applications. Schools, hospitals, government buildings. They offer the widest range of functions, and most can be ordered as fail-safe or fail-secure depending on the model. Browse the full selection of electrified mortise locks we carry from Schlage, Sargent, Corbin Russwin, BEST, and Falcon.

Electrified Cylindrical Locks install through a standard bore hole, making them easier to retrofit. They don't offer quite the same durability as mortise locks, but for medium-security applications they're a solid choice at a lower price point. See our electrified cylindrical locks collection.

Electric Strikes replace the standard strike plate in the door frame. When energized (or de-energized, depending on configuration), the strike releases its keeper and lets the door open without retracting the latch. HES, Von Duprin, and RCI are the dominant brands in this space.

Electromagnetic Locks (Maglocks) use a powerful electromagnet to hold the door. Always fail-safe by design. Available in 300 lb, 600 lb, and 1,200 lb holding force ratings from brands like Securitron, Alarm Controls, and SDC.

Electrified Exit Devices are panic bars with built-in electrification. Latch retraction, dogging, or monitoring can be controlled remotely. Essential for high-security egress doors in schools and government facilities. Check out electrified panic devices from Von Duprin, Sargent, and Falcon.

Common Mistakes We See on Job Sites

We've talked to thousands of contractors and locksmiths over the past two decades. Here are the mistakes that keep coming up.

Putting fail-safe hardware where fail-secure is needed. A storeroom door that unlocks during every power blip is a security nightmare. If the space behind the door needs to stay locked during outages, fail-secure is the only option.

Using maglocks without proper egress release. Maglocks on egress doors need a request-to-exit sensor (motion sensor or push button) plus fire alarm release and power failure release. Skipping any of these creates a code violation.

Mixing up electric strikes and maglocks in the spec. They solve different problems. Electric strikes work with existing locksets and maintain latch security. Maglocks provide holding force but require a separate closer and no mechanical latch. They're not interchangeable.

Forgetting about power supplies. Every electrified lock needs clean, reliable power. An undersized or unprotected power supply causes intermittent lock failures that are incredibly frustrating to troubleshoot. Altronix and Securitron both make excellent access control power supplies designed for this exact purpose.

How to Read an Electrified Lock Model Number

Manufacturers encode the fail-safe or fail-secure configuration right into the model number, but it's not always obvious. Here are the patterns for the most popular brands.

For Schlage L-Series electrified mortise locks, the model number tells you the function. The L9092 electrically locks and unlocks the outside lever. The L9095 controls both levers. Now here's the part that trips people up. The "EL" suffix means Electrically Locked, which is actually fail-safe. Power holds the lock engaged, so when power drops the lever unlocks. The "EU" suffix means Electrically Unlocked, which is fail-secure. Power holds the lever in the unlocked position, so when power drops it locks. Backwards from what you'd guess, right? Schlage makes them field-selectable between EL and EU by flipping a switch on the lock case.

For Corbin Russwin ML2000 series, the ML20906 with "SEC" suffix means fail-secure. Same lock with "SAF" would be fail-safe.

For Sargent 8200 series, the 8271 is the electromechanical fail-secure model. The 8270 would be the fail-safe counterpart.

Not sure which configuration you need? Call us at 877-471-4870. We've been matching contractors with the right electrified hardware since 2001, and we'll walk you through the model numbers until it clicks.

Why Facility Managers Trust American Locksets for Electrified Hardware

We get it. Electrified locks aren't cheap, and the last thing you need is to order the wrong one and eat a restocking fee. Here's why thousands of commercial buyers come back to us.

We've been in this business since 2001. That's not a marketing line. It's 24 years of answering phone calls from contractors standing at job sites, helping them figure out the right lock for the right door. We carry every major brand, including Schlage, Sargent, Corbin Russwin, BEST, Falcon, Von Duprin, and more. Most electrified locks ship same day if they're in stock, and we offer free shipping on orders over $300.

Need a door schedule quoted? Send it to sales@locksearch.com or use our quote request form. We'll match every opening with the right hardware and get you competitive pricing on the whole package.

Security at a storage facility starts with the door. Renters want locks they can count on. Locks that stand up to people trying to break in and to normal daily use. A Cylinder Lock for Storage Unit helps keep doors locked tight, prevents unauthorized entry, and protects everything stored inside.

These locks go on office doors, climate-controlled hallways, admin areas, or replacement swing doors in storage buildings. Choosing a good commercial cylinder lock gives you strength, key control you manage, and a lock that lasts many years.

This guide shows some of the best picks from American Locksets. Facility owners can use these to improve storage security.

What Is a Cylinder Lock?

A cylinder lock has its main locking mechanism inside a removable cylinder. The cylinder decides which key works and moves the latch when you use the right key.

People pick cylinder locks for commercial buildings because they can easily change keys, set up master key systems, and match them to door hardware that meets security rules and codes.

These features make cylinder locks a good choice for controlling who can access many doors in a storage facility.

Best Cylinder Lock Options for Storage Unit

1. BEST 9K37DZ Grade 1 Closet/Storeroom Cylindrical Lock

The BEST 9K37DZ Grade 1 Cylindrical Lock is made for tough use. It has extra strength against twisting and a very solid build. It meets ANSI A156.2 standards. The outside lever is strong and the inside springs are heavy-duty, so the lever does not sag or wear out fast. It works smoothly even when used frequently, making it great for storage facility doors that see constant use.

Key Benefits:

• ANSI/BHMA Grade 1 performance

• Reinforced lever torque resistance

• Smooth operation with strong retractor springs

• Durable through-bolt mounting

• Suitable for high-cycle usage

2. Falcon T521 Grade 1 Office Cylindrical Lock

The Falcon T521 Grade 1 Office Cylindrical Lock gives good security and works in different setups. It uses solid brass in the cylinder and offers several keyway choices. This lets you set up master keys or separate access. It meets ANSI A156.2 Grade 1 standards so it holds up well in places like storage offices or inside doors.

Key Benefits:

• ANSI/BHMA Grade 1 certification

• Solid brass cylinder and plug

• Rekeyable and compatible with master key systems

• Adjustable latch and strike options

• Ideal for office or interior facility doors

3. PDQ GP126 Passage Grade 2 Heavy Duty Cylindrical Lock

The PDQ GP126 Passage Grade 2 Cylindrical Lock works well for doors with medium traffic in storage facilities. It has a tough build and comes with different backset sizes. That makes it easy to use when updating inside doors that need simple passage hardware.

Key Benefits:

• Heavy-duty Grade 2 durability

• Multiple finish and backset options

• Retrofits common commercial door preps

• Ideal for medium-use areas

• Strong latch and lever mechanism

4. PDQ GT148 Classroom Grade 1 Heavy Duty Cylindrical Lock

The PDQ GT148 Cylindrical Lock handles busy doors and rough use. It fits places that need a lock that lasts under heavy traffic. The Grade 1 rating means it stands up to hard conditions. Flexible cores and key options help managers control access at different doors.

Key Benefits:

• ANSI/BHMA Grade 1 strength

• Built for high-traffic environments

• Various keying configurations

• Ideal for large storage facility entry points

• Long-lasting mechanical performance

Benefits of Cylinder Locks for Storage Units

Picking the right Cylinder Lock for Storage Unit does more than just lock a door. For owners, it affects how much renters trust the place, how well things run every day, repair costs, and real security over many years. Commercial cylinder locks give clear advantages over basic locks.

Here is why they work so well for storage facilities.

1. Stronger Protection Against Unauthorized Access

A commercial Cylinder Lock for Storage Unit doors fights off picking, twisting attacks, and forced entry when installed with the right door hardware.

Compared to home locks, commercial cylinder locks:

• Use stronger inside parts

• Have hardened latch and bolt parts

• Stay solid even after lots of stress

• Meet ANSI/BHMA Grade standards (Grade 1 or Grade 2)

Storage facilities with valuable items get much better protection this way.

2. Rekeying Capability Without Full Replacement

Tenants come and go often at storage facilities. Changing the entire lock every time is too expensive and time-consuming.

Cylinder locks let you:

• Change keys quickly without replacing the whole lock

• Swap the cylinder core if needed

• Set up or change master keys for many doors

• Save money on hardware over time

This keeps operations easy and costs down.

3. Master Key System Compatibility

Managers need to keep control. Cylinder locks work with master key systems that let you have:

• Separate keys for each tenant

• Master keys for management

• Special keys for mechanical rooms or restricted areas

• Easy tracking of who has which key

This setup provides good control while still protecting tenant privacy.

4. High-Cycle Durability for Busy Facilities

Climate-controlled hallways, inside doors, and office entries get used many times a day. Commercial cylinder locks are built to withstand heavy use.

You get:

• Stronger springs and latch parts

• Less wear from constant use

• Levers that stay straight over time

• Longer life before repairs

Busy facilities have fewer breakdowns and less repair time.

5. Compatibility With Commercial Door Hardware Systems

A good Cylinder Lock for Storage Unit works well with:

• Commercial door closers

• Strong strike plates

• Steel doors

• Controlled entry systems

The lock becomes part of the full security setup rather than working on its own.

6. Improved Tenant Confidence

Good security helps sell storage units. When renters see strong commercial locks rather than cheap home locks, they feel safer.

A solid cylinder lock:

• Shows the facility takes security seriously

• Makes people feel less worried

• Builds a better reputation

• Cuts down on arguments about break-ins

When tenants feel safe, they stay longer, and more units get rented.

Why Choose American Locksets to Buy Cylinder Lock for Storage Unit

The supplier matters as much as the lock. Owners want reliable commercial hardware, in-stock products, and good help with ordering. American Locksets provide all of that.

Commercial-Grade Hardware From Trusted Brands

American Locksets sells ANSI/BHMA-rated cylindrical locks, lever locks, deadbolts, and cylinders made for heavy commercial use. These are not home locks. They are built for busy places where strength and performance count.

Built for Facility-Level Security Needs

Storage properties have many units, offices, and controlled areas. American Locksets supplies hardware that supports:

• Master key systems

• Rekeyable cylinder cores

• High-cycle door use

• Strong commercial door setups

Your Cylinder Lock for Storage Unit installs can cover the whole property.

Wide Selection in One Centralized Platform

Owners can get everything in one place instead of dealing with many suppliers:

• Cylindrical lever locks

• Cylindrical knob locks

• Deadbolts

• Cylinders, cores, and keys

This makes buying and planning maintenance much easier.

Same-Day Shipping From U.S. Warehouses

Storage projects often need fast delivery. American Locksets keeps many commercial locks in stock at U.S. warehouses. This reduces wait time and locks doors sooner.

Professional Support for Accurate Ordering

Commercial locks must match the door type, backset, and exact use. The American Locksets team helps pick the correct Cylinder Lock for Storage Unit for your job.

Long-Term Maintenance Advantage

Since American Locksets focuses on commercial hardware, replacement parts stay available. You can keep all doors using the same system without big changes later.

Conclusion

You cannot take chances with security at a storage facility. The right Cylinder Lock for Storage Unit needs to be strong, control access, and last for years. That starts with a supplier who knows commercial security well.

American Locksets is a reliable source for commercial cylindrical locks, deadbolts, and cylinder parts that meet ANSI/BHMA standards. Owners trust them for steady stock, same-day shipping from U.S. warehouses, and helpful advice that avoids ordering mistakes.

If you want to protect tenant items, reduce risk, and build a strong reputation, American Locksets provides the commercial hardware foundation you need. Lock it right. Choose locks that last. Choose American Locksets.

FAQs

1. Are cylinder locks suitable for storage unit doors?

Yes. With commercial-grade hardware and proper installation, cylinder locks give good security for office doors and inside areas at storage facilities.

2. Can I master key multiple cylinder locks?

Yes. Many commercial cylinder locks work with master key systems. You get central control while keeping individual access for each unit.

3. What does ANSI Grade 1 mean for a cylinder lock?

ANSI/BHMA Grade 1 is the highest rating for strength and security in commercial use.

4. Can cylinder locks be rekeyed?

Yes. Most commercial cylinder locks can be rekeyed so you do not have to replace the whole lock when keys change.

5. Do these locks ship quickly?

American Locksets keeps many commercial lock models in U.S. warehouses. This means fast shipping and less downtime.