Grade 1 commercial door lock
Mortise Lock
1543993659480363158 (1)
1543993659480363158 (1)
Grade 1 MB series Heavy Duty Mortise Lock
Escutcheon type
  • Outside lever is inoperable when dead locking
  • Stainless latchbolt with anti-friction tongue
  • Non-handed lever. The lockset can be rehanded without disassembling lock case
  • Trim applied by threaded bushing; No exposed screw
  • ANSI A156.13 certificated
  • Passed Grade 1 Cycle test 1,000,000
  • UL 3 hours fire rating certificated. UL file No. R27792
  • Exposed Trim- SUS 304 Stainless or Wrought brass
  • Available in Escutcheon and Sectional type
  • Solid brass Non- Handed lever
  • Door Thickness: 1-3/4" (44mm) standard, optional door thickness available
  • Lock case: CTC 3-7/8"(98mm)
  • Backset: 2-3/4"(70mm)
  • Deadbolt: Stainless: 1" (25.4mm) throw with hardened steel insert
  • Latch bolt: 2-piece Stainless steel with anti-friction tongue, 3/4"(19mm) throw
  • Auxilary latch bolt: Stainless; Non-handed