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Legge 991MF Mortice Lock

Legge's 991MF configured as either a Combination or Vestibule Mortice Lock has been designed specifically to meet the requirements of the Australasian market. The 991MF is ideally suited for commercial, industrial, institutional and government buildings, where durability and security are of major importance.

The 991MF has a high purity die-cast zinc alloy case to provide rigidity and precision. Major internal components are made of either stainless steel or sintered steel/ copper alloy to provide durability and strength.

Key Features
  • Multi-function case allows easy conversion of a vestibule lock function (inside handle-free) to a combination lock function (both handles locked) by a simple external operation 
  • Anti-lockout feature which can be easily configured during installation
  • Lock compatibility with award-winning QuickFix™ technology for faster door hardware installation
  • Reversible stainless steel latch adjusts for inwards/outwards opening and left/right hand without case disassembly
  • Lock suitable for doors 32mm to 50mm thick. Extended cylinders, spindles, and strike plates available to accommodate thicker doors and wider jambs
  • Latch-head with radius for smoother door closing action
  • Closed through holes to reduce dust getting into the lock
  • 991MF case will accept bolt-through fixing for 50.8mm diagonal, 38mm-41mm horizontal fixing door furniture, and QuickFix™ furniture
  • Follower will accept 7.6mm-8mm furniture spindles, with no adjustment necessary 
  • Quick change cylinder retaining pins
  • Extended door gap range to accommodate dead-latching on a wider range of doors
Scope of Use

Ideally suited for commercial, industrial, institutional and government buildings:

  • Door type: Timber or metal
  • Door thickness: 32mm to 50mm standard, extended cylinders, spindles and strike plates available to accommodate thicker doors
  • Lock case: High purity zinc alloy
  • Outer forend: Stainless steel
  • Inner forend: Stainless steel
  • Bolt :Stainless steel
  • Sub-bolt :Stainless steel
  • Spindles: 2 split spindles 32mm
  • Strike plate: Stainless steel
  • Backsets: 60mm
  • Key cylinder C4 6 Pin keyway standard, Schlage C6 pin keyway optional, Schlage SR1 Restricted keyway optional, Schlage Everest Open & Restricted keyways optional
Other Performance Attributes


Fire rated Four hour fire rating (refer to door manufacturer)

Data Sheet
Commercial Warranty 2023
Bochure: 991, 990, 995 Series
Caring for Door Hardware

Allegion locally manufactures residential and commercial hardware: electronic locks, mechanical door furniture, cylinder, keying, door control, exit devices and hardware for sliding and folding doors.

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