Product Details
Corbin Russwin ML2087 Security Vestibule, Double Cylinder
ML2087 - Security Vestibule
- Latchbolt by grip outside, unless outside grip is locked by key outside.
- Outside grip remains locked unless unlocked by key outside.
- Latchbolt by key outside when outside grip locked.
- Latchbolt by key inside.
- Inside grip always rigid.
- Auxiliary latch deadlocks latchbolt.
Notes:-
- Handing must be specified.
- This function can only be field handed for door swing i.e. LH to LHR or RH to RHR.
- Not available with L, R or V escutcheon trim.
- This function does not allow free egress when inside locked and can pose a life.
- safety hazard in event of an emergency.
- Installation should be in accordance with approved codes only.
Levers

Lustra-Complies with codes requiring lever to return to within 1/2" (13mm) of door face. Brass, bronze or stainless steel.
Regis-Brass, bronze or stainless steel.
Citation- Brass, bronze or stainless steel - Laser engraving option.
Newport -Complies with codes requiring lever to return to within 1/2" (13mm) of door face. - Brass, bronze or stainless steel - Laser engraving option.
Armstrong -Brass, bronze or stainless steel - Laser engraving option.
Dirke- Brass, bronze or stainless steel -Not reversible -Handed levers.
Essex-Complies with codes requiring lever to return to within 1/2" (13mm) of door face. Brass, bronze or stainless steel.
Princeton -Complies with codes requiring lever to return to within 1/2" (13mm) of door face - Brass, bronze or stainless steelL - Laser engraving option.
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Specification
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 Latchbolt:*9/16" (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.