Von Duprin 6211 Electric Strike: The Complete Specification and Application Guide

The Von Duprin 6211 electric strike is a heavy-duty, stainless steel electric strike for mortise and cylindrical lock applications on single commercial doors. Part of the Von Duprin 6200 Series, it carries ANSI/BHMA A156.31 Grade 1 certification, UL294, UL1034, and UL10C fire-rated listings, and CSFM California State Fire Marshal approval. With a 1,500-pound static holding strength, tested beyond 250,000 cycles, and available in fail secure and fail safe configurations across 12VDC and 24VDC, it is the first product most commercial specifiers reach for when an access-controlled mortise or cylindrical door opening is on the schedule. This guide covers every specification decision worth knowing before the order ships.

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How Remote Release Actually Works on a Commercial Door

A standard strike plate is fixed. The latchbolt seats against it, holds the door closed, and the only way to open the door from outside is with a key or credential at the lock. An electric strike changes the frame side of that equation without touching the lock body at all.

The 6211 replaces the fixed strike with a movable Pullman keeper. When the access control system energizes the solenoid, the keeper releases and swings clear, allowing the latchbolt to ride over it as the door is pulled open. The lock itself stays mechanical. The latchbolt does not retract. The door simply opens because the frame is no longer holding it.

When the signal stops, the keeper resets automatically. The door is secure again on the next close. This is why electric strikes work for reception entries, secured corridors, and any opening where a person at a security panel or a card reader needs to grant access remotely without handling the door themselves.

One critical specification note: the 6211 is designed for mortise locks without a deadbolt and for cylindrical locks. A deadbolt will not function correctly with this strike. If the lockset has a deadbolt, a different electric strike model is required.

FSE, FS, and Field Convertibility: Getting the Function Right

The function code determines what the door does when power fails. This decision cannot be reversed after installation without replacing the strike body, so it needs to be confirmed against the door's life-safety requirements before the order is placed.

FSE (Fail Secure Standard): Power unlocks the strike. No power means the door is locked. The FSE is the default configuration and the fire-rated option. It is correct for server rooms, restricted access corridors, pharmacy storage, executive suites, and any opening where the secure state is the safe state during an emergency.

FS (Fail Safe): Power locks the strike. No power means the door is unlocked. FS is non-fire-rated. Building codes prohibit fail-safe electric strikes on fire-labeled openings. It is the correct specification for egress paths where NFPA and IBC require free exit during a power failure or fire alarm panel activation.

Both configurations are field convertible with parts. A 6211 FSE ordered today can be converted to FS on site without replacing the entire strike body, which matters for large projects where function codes are confirmed late in the design phase and for facilities that maintain unified spare parts inventory across a mixed door schedule.

Technical Specifications and UL Listings

Physical and installation specifications:

• Faceplate: 1-1/4 inch x 4-7/8 inch

• Accepted latchbolt throw: 3/4 inch (19mm)

• Door prep: ANSI A115.1 standard height

• Installation clearance: 1/32 inch between latchbolt and strike lip

• Fasteners: two No.12-24 screws included

• Frame compatibility: hollow metal, aluminum, or wood (6211WF for wood frame)

UL and compliance listings:

• UL294: Access control system components

• UL1034: Burglary-resistant electric door strikes

• UL10C: Fire-rated, 3 hours on single doors / 90 minutes on door pairs with inactive leaf

• CSFM: California State Fire Marshal listed

• ANSI/BHMA A156.31 Grade 1

The 3-hour vs 90-minute distinction matters on projects with paired doors. A single active-leaf door with the 6211 qualifies for a 3-hour fire-rated assembly. A paired door assembly where the 6211 sits on the active leaf with an inactive leaf alongside qualifies for 90 minutes only. Confirm the required fire-rating duration against the assembly listing before specifying.

The 6211DS: What the Dual Monitor Switch Actually Does

The standard 6211 releases and resets. The 6211DS adds two independent monitoring circuits that report door status back to the access control panel in real time.

The first circuit monitors the strike lip position, reporting whether the keeper is in the locked or released state. The second circuit monitors latchbolt engagement, reporting whether the door has physically closed and latched. Together they allow the panel to distinguish between four conditions: door closed and locked, door closed but strike released, door open, and door ajar with latch not fully engaged.

For healthcare campuses, government buildings, and university facilities running 24-hour security monitoring, the DS variant is specified on high-priority openings precisely because a standard strike cannot tell the panel whether an unlatched door is a maintenance issue or a security event. The 6211DS and 6211WFDS (wood frame version) both share the same faceplate dimensions and door prep as the standard 6211, so a project can mix standard and DS models across a door schedule without changing frame preparation.

The 6211WF: Wood Frame Applications

The standard 6211 is engineered for hollow metal and aluminum frames. For wood frame openings, the 6211WF is the correct specification. It carries the same ANSI/BHMA Grade 1 rating, the same UL listings, and the same FSE and FS functions with a faceplate profile and fastener pattern designed for wood frame construction. Installing the standard 6211 into a wood frame results in improper seating and reduced holding force against the rated 1,500-pound static load. The 6211WFDS adds the dual monitor switch capability to the wood frame body for facilities requiring position monitoring on those openings.

Power Supply Sizing: The Detail That Causes Installation Failures

At 12VDC, the 6211 draws 600mA continuously per strike. A 1-amp supply covers one strike at 12V with minimal overhead. A project with six strikes at 12VDC needs at minimum a 4-amp supply to cover simultaneous operation plus system overhead.

At 24VDC, the draw drops to 330mA per strike. A 1-amp supply at 24V covers three strikes. Most access control integrators specify 24VDC for any project with more than two strikes precisely because the current efficiency at 24V allows better power supply utilization across a larger door schedule.

The correct sizing approach: multiply the number of 6211 strikes by the per-strike amp draw for the chosen voltage, add 20 percent safety margin, and select the next available power supply capacity above that figure. Undersized power supplies are one of the most common causes of intermittent release failures that get misdiagnosed as wiring problems during commissioning.

Retrofit and Accessory Compatibility

The 6211 is the designated drop-in replacement for two legacy models still present in large numbers across commercial buildings: the Von Duprin 3140 and the Folger Adams 712. Both used the same frame cutout dimensions as the 6211, making frame modification unnecessary on a direct retrofit. For facilities managers upgrading access control on existing buildings, this eliminates the door fabrication cost that typically comes with a hardware replacement.

For projects where latch guard protection is needed over the strike, the IVES LG14 is the compatible latch guard. It is 13-gauge stainless steel with a satin finish and a relieved area specifically designed to accommodate the 6211 strike body, allowing the door to close without interference from the guard. This detail matters on high-vandalism or high-traffic openings where the exposed strike lip is a target for tampering.

The 6211 is also compatible with Schlage, Falcon, and Von Duprin cylindrical and mortise locksets, as well as most other manufacturers' products with a 3/4-inch latchbolt throw. Von Duprin does note that compatibility with other manufacturers cannot be guaranteed as designs may change without notice, so verifying latchbolt dimensions against the 6211 spec sheet before ordering on a non-Allegion lockset is the correct procedure.

Why American Locksets Is the Right Source for the Von Duprin 6211

Twenty-four years supplying Von Duprin hardware from authorized Allegion distribution means we have seen what happens when an FSE strike goes on an egress door that needed FS, when a standard 6211 gets ordered for a wood frame opening, and when a power supply gets sized to the strike count without accounting for simultaneous operation.

The conversation we have before the order ships is the one that prevents those problems. When a contractor or integrator calls 877-471-4870 with a 6211 requirement, we confirm function (FSE or FS), voltage, variant (standard, DS, or WF), and frame type before anything ships. The complete Von Duprin 6200 Series is in authorized stock. For projects where the 6211 installs alongside commercial locks on the same door schedule, or where exit hardware is specified on adjacent openings, both ship on a single authorized dealer order. The complete electric strike lineup is in our electric strikes section, and supporting electronic hardware including power supplies ships with it.

Same-day shipping from multiple US warehouses. Call 877-471-4870 or shop directly below.

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Conclusion

The Von Duprin 6211 is a Grade 1 electric strike built for the full range of commercial single-door applications: heavy-duty stainless steel construction, 1,500-pound static holding strength, 250,000-cycle rating, and three UL listings covering access control, burglary resistance, and fire-rated assemblies. FSE is fire-rated and locks on power loss. FS is non-fire-rated and unlocks on power loss. The DS variant adds dual position monitoring for real-time door status at the access control panel. The WF and WFDS models cover wood frame openings with the same ratings. At 24VDC, the 330mA draw allows efficient power supply sizing on multi-strike projects. American Locksets carries the complete 6200 Series from authorized Allegion stock with same-day shipping. Call 877-471-4870 or visit our electric strikes section to confirm the right configuration.

Frequently Asked Questions

What locks is the Von Duprin 6211 compatible with?

 Mortise locks without a deadbolt and cylindrical locks with a 3/4-inch latchbolt throw. Deadbolts will not function with this strike.

What is the difference between 6211 FSE and FS?

 FSE is fail secure, locked when power is off, fire-rated. FS is fail safe, unlocked when power is off, non-fire-rated. Building codes prohibit FS on fire-labeled openings.

What is the 6211DS dual monitor switch? 

Two independent circuits that monitor strike lip position and latchbolt engagement simultaneously, reporting both signals to the access control panel in real time.

What is the fire rating on the Von Duprin 6211?

 UL10C listed for 3-hour fire-rated assemblies on single doors and 90 minutes on paired door assemblies with an inactive leaf. Also CSFM California State Fire Marshal listed.

What is the difference between the 6211 and 6211WF?

 The standard 6211 is for hollow metal and aluminum frames. The 6211WF is engineered specifically for wood frame openings. Both share the same ratings and functions.

What legacy models does the 6211 replace?

 Direct drop-in replacement for the Von Duprin 3140 and Folger Adams 712 using the same frame cutout, with no frame modification required.

Where can I buy the Von Duprin 6211 electric strike?

 American Locksets stocks all variants including FSE, FS, DS, and WF at americanlocksets.com. Call 877-471-4870 to confirm the specification.

Published by the American Locksets Hardware Team. Authorized Allegion Dealer, Est. 2001, Monroe, NY.