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Extra Heavy Duty Lockset - M series - Mortise Lock

Mortise Locks

M series

Extra Heavy Duty



Meets ANSI - A156.13, Series 1000, Grade 1 Standards

UL Listing:

UL Listed for "A" Label 3 Hour Fire Doors, Singles or Pairs


Meets ADA and ANSI A117.1 with lever trim


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Armored Front

Wrought Stainless Steel or Brass 1 1/4" x 8"


Stainless Steel 3 Piece Anti Friction Latch bolt with 3/4" projection
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Non handed Stainless Steel Deadlatch
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1" Throw, Stainless Steel with Anti-Saw Pins


  • Lock Case: 2 3/4″ Backset with heavy gauge zinc dichromated steel
  • Levers: 5” Full Length cast Zinc
  • Lever Return: Independent lever return springs to prevent lever sag
  • Backset: 2 3/4″ backset
  • Handing: Handed as RHR – Easily Rehanded in the field


Choose from a variety of finishes to match any project you may have.

Bright/Polished Brass (US3/605)

Bright Polished Brass (US3 - 632)

Special Order

Brushed/Satin Brass (US4/606)

Brushed/Satin Brass (US4/633)

Special Order

Oil Rubbed Bronze (US10B/613)

Special Order

Bright/Polished Chrome(US26/625)


Special Order

Brushed/Satin Chrome (US26D/626)

Brushed/Satin Chrome (US26D/652)

In Stock

Bright/Polished Stainless Steel (US32/629)

Bright/Polished Stainless Steel (US32/629)

Special Order

Brushed/Satin Stainless Steel (US32D/630)

Brushed/Satin Stainles Steel (US32D/630)

Special Order


Trim Design Options

  • Sectional
  • Escutcheon

Cylinder Options

  • C Keyway 6 pin – 1 1/4″ for sectional & 1 3/8″ for escutcheon with DH M series cam
  • Prepared for small format IC core (less core)

Electrified Options

  • REX – Request to exit switch
  • Motor Driven lock/unlock function 12/24 V (AC/DC) Fail Safe/Fail Secure

Lever Design Options

  • Flat
  • Curved
  • Half Curved
  • Tubular
  • Ball Knob