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Corbin Russwin ML2072 NSA Classroom Intruder Mortise Lock, NS Lever, A Rose

Picture of Corbin Russwin ML2072 NSA Classroom Intruder Mortise Lock, NS Lever, A Rose
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Picture of Corbin Russwin ML2072 NSA Classroom Intruder Mortise Lock, NS Lever, A Rose
Picture of Corbin Russwin ML2072 NSA Classroom Intruder Mortise Lock, NS Lever, A Rose
Picture of Corbin Russwin ML2072 NSA Classroom Intruder Mortise Lock, NS Lever, A Rose
Picture of Corbin Russwin ML2072 NSA Classroom Intruder Mortise Lock, NS Lever, A Rose
Picture of Corbin Russwin ML2072 NSA Classroom Intruder Mortise Lock, NS Lever, A Rose
Picture of Corbin Russwin ML2072 NSA Classroom Intruder Mortise Lock, NS Lever, A Rose
Picture of Corbin Russwin ML2072 NSA Classroom Intruder Mortise Lock, NS Lever, A Rose
Picture of Corbin Russwin ML2072 NSA Classroom Intruder Mortise Lock, NS Lever, A Rose
Picture of Corbin Russwin ML2072 NSA Classroom Intruder Mortise Lock, NS Lever, A Rose
Picture of Corbin Russwin ML2072 NSA Classroom Intruder Mortise Lock, NS Lever, A Rose
Picture of Corbin Russwin ML2072 NSA Classroom Intruder Mortise Lock, NS Lever, A Rose
Picture of Corbin Russwin ML2072 NSA Classroom Intruder Mortise Lock, NS Lever, A Rose
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ML2024-NSA
1Corbin-Russwin-FinishesChart
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Picture of Corbin Russwin ML2072 NSA Classroom Intruder Mortise Lock, NS Lever, A Rose
Picture of Corbin Russwin ML2072 NSA Classroom Intruder Mortise Lock, NS Lever, A Rose
Picture of Corbin Russwin ML2072 NSA Classroom Intruder Mortise Lock, NS Lever, A Rose
Picture of Corbin Russwin ML2072 NSA Classroom Intruder Mortise Lock, NS Lever, A Rose
Picture of Corbin Russwin ML2072 NSA Classroom Intruder Mortise Lock, NS Lever, A Rose
Picture of Corbin Russwin ML2072 NSA Classroom Intruder Mortise Lock, NS Lever, A Rose
Picture of Corbin Russwin ML2072 NSA Classroom Intruder Mortise Lock, NS Lever, A Rose
Picture of Corbin Russwin ML2072 NSA Classroom Intruder Mortise Lock, NS Lever, A Rose
Picture of Corbin Russwin ML2072 NSA Classroom Intruder Mortise Lock, NS Lever, A Rose
Picture of Corbin Russwin ML2072 NSA Classroom Intruder Mortise Lock, NS Lever, A Rose
Picture of Corbin Russwin ML2072 NSA Classroom Intruder Mortise Lock, NS Lever, A Rose
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Product Details

Corbin Russwin ML2072-NSA Mortise Classroom Intruder Lock

Classroom Intruder

Latchbolt by grip from either side unless outside grip is locked by projection of deadbolt. Deadbolt thrown or retracted by key from either side. Inside grip simultaneously retracts latchbolt and deadbolt; outside grip remains locked. Retracting latchbolt by key unlocks outside grip. Auxiliary latch deadlocks latchbolt.

Handing: Quick reversible. The lockset can be re-handed without disassembling the lock case

Door Thickness: 1-3/4" (44mm) standard.

Backset: 2-3/4" (70mm).

Lockcase: Heavy-gauge chrome plated steel, 5-7/8" (149mm) x 4" (102mm) x 15/16" (24mm).

Front: Heavy-gauge steel, 8" (203mm) x 1-1/4" (32mm) x -3/32" (2mm). Accommodates flat doors and doors beveled 1/8" (3mm) in 2" (51mm). Furnished 1-1/16" (27mm), optional D138, wide for 1-3/8" (35mm) doors.

Armored Front: Wrought brass, bronze or stainless steel attached by machine screws to lockcasem front.

Latchbolt: 2-piece mechanical with anti-friction insert, 5/8" (16mm) x 1" (25mm) x 3/4"(19mm) throw.

Auxiliary Latchbolt9/16" (14mm) effective throw and 3/8" (10mm) effective auxiliary latch deadlocking.

Deadbolt: One-piece stainless steel, 19/32" (15mm) x 1-1/4" (32mm) x 1" (25mm) throw.

Hub Knob: stainless steel, 9/32" (7mm) x 9/32" (7mm). Lever: steel, 5/16" (8mm). (Including ) 3/8" (10mm) stainless steel.

Spacing: C. to c. knob/lever to cylinder: 3-5/8" (92mm). C. to c. knob/lever to thumbturn: 2-7/16" (62mm).

Strike: Wrought brass, bronze or stainless steel, ANSI straight lip standard, 4-7/8" (124mm) x 1-1/4" (32mm) x 1-1/8" (29mm) lip to center. Optional strikes, lip lengths and ANSI wrought strike box available

Cylinder: Brass, 6-pin, L4 keyway standard. Optional cylinders available, 7-pin cylinder, Interchangeable core (IC)

Keys: Two nickel silver standard.

Keying Features Available: Master keying, Construction master keying

Warranty: Ten-year limited.

Model: Corbin Russwin ML2072NSA, ML2072NSA605, ML2072NSA606, ML2072NSA612, ML2072NSA613, ML2072NSA625, ML2072NSA626, ML2072NSA630, ML2072NSA722  

Corbin Russwin ML2072 NSA Classroom Intruder Mortise Lock, NS Lever, A Rose

SKU: ML2072 NSA

In Stock

$976.24

Finish *

626 - Satin Chrome
626 - Satin Chrome
613 - Oil Rubbed Bronze
613 - Oil Rubbed Bronze
630 - Satin Stainless Steel
630 - Satin Stainless Steel
722 - Black Oxidized Bronze
722 - Black Oxidized Bronze

Cylinder *

Conventional (Standard)
Conventional (Standard)
CL6 - Prepared for Interchangeable core, less core
CL6 - Prepared for Interchangeable core, less core
LC - Less Cylinder
LC - Less Cylinder

Keyway *

Keying *

About this item

The Corbin Russwin ML2072 eliminates it. It's the classroom intruder function: the deadbolt is thrown from inside the classroom by key, locking the outside lever without the teacher ever entering the corridor. The room is secured while the teacher and students stay on the safe side of the door.

When the deadbolt is thrown from inside, the outside lever locks rigid. Staff can enter from outside using a key, which simultaneously retracts the latch bolt and unlocks the outside lever, restoring normal operation after the situation is resolved. Inside lever is always free for egress: turning it retracts both the latch and deadbolt simultaneously, but the outside lever remains locked until a key from outside resets it.

For the complete Corbin Russwin ML2000 Series, browse our Corbin Russwin lever locks. For all commercial mortise locks, view our mortise locks catalog.

 

ML2072 Classroom Intruder Function: Four Operating States

 

State one, normal operation: Deadbolt retracted, both levers operate the latch freely. The classroom door operates like standard passage hardware during normal school hours.

State two, intruder lockdown: Teacher inserts key from inside cylinder and throws the deadbolt. The outside lever locks immediately. No one can enter from the corridor without a key. The teacher locked the door without entering the corridor.

State three, inside egress: Inside lever turns, simultaneously retracting both the latch and the deadbolt. Door opens for egress. Outside lever remains locked after the door closes. Anyone entering from the corridor after egress still needs a key.

State four, staff re-entry: Authorized staff insert a key in the outside cylinder, which retracts the latch and simultaneously unlocks the outside lever. This restores normal lever operation after the lockdown.

 

Corbin Russwin ML2072 NSA Technical Specifications

 

Series: Corbin Russwin ML2000. Function: ML2072, Classroom Intruder. Trim: NSA, NS Lever (Newport), A Rose. Grade: Grade 1. SKU: ML2072 NSA 626. Door thickness: 1-3/4" (44mm) standard. Backset: 2-3/4" (70mm). Handing: Quick reversible without disassembling lock case. Lockcase: Heavy-gauge chrome plated steel, 5-7/8" x 4" x 15/16" (149mm x 102mm x 24mm). Front: Heavy-gauge steel, 8" x 1-1/4" x 3/32"; flat and beveled door compatible; optional D138 wide for 1-3/8" doors. Armored front: Wrought brass, bronze, or stainless steel, machine screw attached. Latchbolt: 2-piece with anti-friction insert, 5/8" x 1" x 3/4" throw (19mm). Auxiliary latchbolt: 9/16" effective throw, 3/8" effective deadlocking. Deadbolt: One-piece stainless steel, 19/32" x 1-1/4" x 1" throw (25mm). Strike: ANSI straight lip, 4-7/8" x 1-1/4" x 1-1/8" lip to center; optional strikes available. Cylinder: Brass, 6-pin, L4 keyway standard; 7-pin optional; interchangeable core (IC) available. Keys: Two nickel silver standard. Keying: KD standard; Keyed Alike (+$20); Master Keyed (+$30); Construction Master Keying. Finishes: 605, 606, 612, 613, 625, 626, 630, 722. Warranty: 10-year limited.

 

ML2072 vs. ML2055: Classroom Intruder vs. Standard Classroom

 

The ML2055 is the standard classroom function (ANSI F05). The outside lever is locked and unlocked by key from the outside corridor. The teacher must approach the door from inside, open it slightly or fully, and insert the key in the outside cylinder to lock it. In an active threat, that step creates corridor exposure.

The ML2072 classroom intruder function uses the inside cylinder to throw the deadbolt from the safe side of the door. No corridor exposure required. Both functions provide key entry for staff from outside. The difference is entirely in how lockdown is initiated.

For K-12 schools, the ML2072 is the current security standard recommendation for classroom door hardware in facilities that have evaluated the corridor exposure risk of standard classroom locks.

Corbin Russwin ML2072-NSA Mortise Classroom Intruder Lock

Classroom Intruder

Latchbolt by grip from either side unless outside grip is locked by projection of deadbolt. Deadbolt thrown or retracted by key from either side. Inside grip simultaneously retracts latchbolt and deadbolt; outside grip remains locked. Retracting latchbolt by key unlocks outside grip. Auxiliary latch deadlocks latchbolt.

Handing: Quick reversible. The lockset can be re-handed without disassembling the lock case

Door Thickness: 1-3/4" (44mm) standard.

Backset: 2-3/4" (70mm).

Lockcase: Heavy-gauge chrome plated steel, 5-7/8" (149mm) x 4" (102mm) x 15/16" (24mm).

Front: Heavy-gauge steel, 8" (203mm) x 1-1/4" (32mm) x -3/32" (2mm). Accommodates flat doors and doors beveled 1/8" (3mm) in 2" (51mm). Furnished 1-1/16" (27mm), optional D138, wide for 1-3/8" (35mm) doors.

Armored Front: Wrought brass, bronze or stainless steel attached by machine screws to lockcasem front.

Latchbolt: 2-piece mechanical with anti-friction insert, 5/8" (16mm) x 1" (25mm) x 3/4"(19mm) throw.

Auxiliary Latchbolt9/16" (14mm) effective throw and 3/8" (10mm) effective auxiliary latch deadlocking.

Deadbolt: One-piece stainless steel, 19/32" (15mm) x 1-1/4" (32mm) x 1" (25mm) throw.

Hub Knob: stainless steel, 9/32" (7mm) x 9/32" (7mm). Lever: steel, 5/16" (8mm). (Including ) 3/8" (10mm) stainless steel.

Spacing: C. to c. knob/lever to cylinder: 3-5/8" (92mm). C. to c. knob/lever to thumbturn: 2-7/16" (62mm).

Strike: Wrought brass, bronze or stainless steel, ANSI straight lip standard, 4-7/8" (124mm) x 1-1/4" (32mm) x 1-1/8" (29mm) lip to center. Optional strikes, lip lengths and ANSI wrought strike box available

Cylinder: Brass, 6-pin, L4 keyway standard. Optional cylinders available, 7-pin cylinder, Interchangeable core (IC)

Keys: Two nickel silver standard.

Keying Features Available: Master keying, Construction master keying

Warranty: Ten-year limited.

Model: Corbin Russwin ML2072NSA, ML2072NSA605, ML2072NSA606, ML2072NSA612, ML2072NSA613, ML2072NSA625, ML2072NSA626, ML2072NSA630, ML2072NSA722  

Picture of Corbin Russwin ML2072 NSA Classroom Intruder Mortise Lock, NS Lever, A Rose
Corbin Russwin ML2072 NSA Classroom Intruder Mortise Lock, NS Lever, A Rose

Product code: ML2072 NSA

In Stock

$976.24

$976.24

Certification/Compliance ANSI: Meets A156.13 Series 1000, Operational and Security Grade 1. Meets A117.1 Accessibility Code.

Federal: Meets FF-H-106C.

UL /ULC-UL10C Positive Pressure: All locks listed for A label and lesser class doors, 4' (122cm) x 10' (305cm) single or 8' (244cm) x 10' (305cm) pair. Letter F and UL symbol on armored front indicate listing.

California State Reference Code: (Formerly Title 19, California State Fire Marshal Standard)All levers with returns, return to within 1/2" (13mm) of door face.

Picture of Corbin Russwin ML2072 NSA Classroom Intruder Mortise Lock, NS Lever, A Rose
Corbin Russwin ML2072 NSA Classroom Intruder Mortise Lock, NS Lever, A Rose

Product code: ML2072 NSA

In Stock

$976.24

$976.24

Corbin Russwin ML2072 NSA Classroom Intruder Mortise Lock, NS Lever, A Rose

SKU: ML2072 NSA

Related Brands

The Corbin Russwin ML2072 eliminates it. It's the classroom intruder function: the deadbolt is thrown from inside the classroom by key, locking the outside leve

The Corbin Russwin ML2072 eliminates it. It's the classroom intruder function: the deadbolt is thrown from inside the classroom by key, locking the outside leve