Corbin Russwin ML2057 LSR Storeroom or Closet Mortise Lock, LS Lever, R Escutcheon

Corbin Russwin ML2057 LSR Storeroom or Closet Mortise Lock, LS Lever, R Escutcheon

The Corbin Russwin ML2057 LSR is a heavy duty mortise lockset made for doors that need controlled entry. The outside lever stays rigid until the correct key is used, while the inside lever always opens the door for safe exit. It uses an ANSI F07 storeroom function and includes an auxiliary latch that deadlocks the latchbolt for added protection against prying.

Function

This is an ANSI F07 storeroom or closet function where the latchbolt is operated by the inside lever at all times and by the key from the outside, with the outside lever staying rigid when locked.

Applications

It is commonly used on doors such as supply rooms, storage rooms, and closets where you want key entry from the corridor side and free exit from the inside.

Best for

• Supply rooms

• Storage rooms

• Staff only areas

• Mechanical rooms

• Janitor closets

• Back of house doors in facilities
  
  

It helps by

• Keeping the outside lever rigid until a key is used

• Allowing free exit using the inside lever

• Deadlocking the latchbolt using an auxiliary latch for better resistance to tampering

• Supporting accessibility and code focused openings with listed compliance notes
  
  

Key highlights

• Grade 1 mortise lock for demanding openings

• ANSI F07 storeroom function with rigid outside lever

• Quick reversible handing

• Auxiliary latch that deadlocks the latchbolt

• Wide set of cylinder and keying selections on the product page
  
  

What’s included

• ML2057 mortise lock body

• LS Lustra lever trim with R Escutcheon (as configured)
  Strike (ANSI straight lip standard noted)

• Cylinder option based on selection (conventional, prepared for interchangeable core less core, or less cylinder)

• Two keys when a keyed cylinder is selected
  
  

Key features

• Outside lever rigid until key use

• Inside lever always opens

• Auxiliary latch deadlocks latchbolt

• Quick reversible handing

• Heavy gauge steel lockcase

• L4 keyway standard with other keyway choices listed
  
  

Keying options

• Standard, Keyed Different (KD)

• Keyed Alike, same key for all selected locks

• Master Keyed, individual keys plus a master key

• None, for less core or less cylinder selections
  
  

Warranty

• ML2000 Series mortise locksets: 10 year limited warranty

• Finishes: limited warranty period of 1 year after invoice date 

Specifications

• Series: ML2000 Series

• Function: Storeroom or Closet, ANSI F07

• Handing: Quick reversible, re-hand without disassembling the lock case

• Door thickness: 1 3/4 inch standard

• Backset: 2 3/4 inch

• Lockcase size: 5 7/8 inch x 4 inch x 15/16 inch

• Front size: 8 inch x 1 1/4 inch

• Latchbolt: 2-piece mechanical with anti-friction insert, 3/4 inch throw
  Auxiliary latchbolt: effective deadlocking action noted on listing

• Cylinder: brass 6-pin, L4 keyway standard, with optional cylinder choices
  Keys: two standard keys noted on listing

• Compliance notes shown: A156.13 Series 1000 Grade 1, A117.1, UL listings as stated on page
  
  

Related Categories

• L- Lustra Lever