Marks USA LA318GJ Maximum Security Mortise Lockset Spec Sheet

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Maximum Security Mortise Lockset LA318GJ Series

PERFORMANCE SPECIFICATIONS:

Life Test: 1,500,000 cycles, minimum

Strength Test: Test: 530 foot lbs. torque on exterior lever. When applied,

lockset remains locked. (Torque of over 550 foot lbs. will cause spindle failure. However, lockset remains locked once spindle is replaced, lockset is fully operational.)

ANSI Test: Certified to meet or exceed all operational and security

tests of ANSI/BHMA A156.13-2012 for series 1000,

Grade 1.

Fire Test: UL listed, 3 hour fire rated. Meets ADA requirements.

Warranty: Lifetime mechanical limited warranty

All other functions available with latch, deadlatch and deadbolt combinations.

FUNCTION SPECIFICATION: LA318GJ CLASSROOM INTRUDER Latch by lever either side except when outside lever is locked from inside or

outside by key. When locked, exterior key will retract latchbolt. Outside key locks or unlocks exterior lever. Inside key is single acting in one direction and will lock exterior lever only; will not unlock exterior lever. Auxiliary latch

deadlocks latch. Inside always free for egress.

Trim: Cast satin stainless steel escutcheon 8-1/2"x2-3/4"x7/16".

Recess in escutcheon to accept cylinder with rotating security cylinder ring. Cast screwless satin stainless steel lever handles to within 1/2" from face of door secured to escutcheon plate with hardened steel retainer ring. Lever handle, with spring-loaded torque sensitive 5/16" spindle. Integral torque override preventer recessed into escutcheon plate. Spindle will yield if excessive torque

applied, preventing any damage to lock body.

Exterior: Two ¼" diameter threaded thru posts. Two ¼" diameter

center posts pass thru lock body, automatically aligning

trim

Interior: Two #10-32 phillips head stainless steel mounting

thru bolts. Escutcheon with "LOCK" and directional arrow engraved and black filled near cylinder location. Occupancy indicator recessed into escutcheon plate. Indicator window to display unlocked (green day-glo) and

LocDown™ (red day-glo) positions.

Cylinders: Two 1-1/8", 6-pin solid brass with "J" cams #2105, with two

keys. Outside cylinder rotates in both directions. Inside cylinder rotates in one direction only. Cams supplied to accommodate Corbin™, Sargent™ and Schlage™ cylinders.

Strike: 4-7/8" X 1-1/4" X 3/32" thick, 5/8" curved lip.. Conforms to

ANSI spec. 115.1.

Door Thickness: 1-3/4"

Lock Body: 5 series "GJ" function double cylinder lock. Lock handing completely reversible without opening lock case.

  • 1. Lock Front Adjustable bevel steel backplate 1 ¼"x8 ½" x 7/64" thick. Cover plate 1/16"thick, with phillps screws
  • 2. Latch solid stainless steel w/ antifriction latch lever ¾" throw
  • 3. Auxiliary Deadlatch ½" throw
  • 4. Case stamped steel 3/32" thick
  • 5. Hubs Steel, 9/32" on diamond, 5/16" on square w/ security separator
  • 6. Independent exterior and interior lever support springs