Corbin Russwin ML2054 LWA Entrance or Office Mortise Lock, LW Lever, A Rose

The Corbin Russwin ML2054 LWA is a Grade 1 entrance and office function mortise lock from the ML2000 series, configured with the LW Lustra lever and A rose. It conforms to ANSI F04 and meets ANSI A156.13 Series 1000 Operational and Security Grade 1 standards, making it the correct specification for high-traffic commercial, institutional, industrial, and government door openings. The lockcase is heavy-gauge chrome plated steel measuring 5-7/8" x 4" x 15/16", the deadbolt is one-piece stainless steel with a 1" throw, and the unit carries a 10-year limited warranty.

How ANSI F04 entrance and office function works

Under ANSI F04, the latchbolt operates by grip from either side under normal conditions. The outside grip locks when the inside thumbturn is engaged, and once locked, the outside grip can only retract the latchbolt by key. The inside grip is always free regardless of the thumbturn position, ensuring immediate egress at all times. The auxiliary latch automatically deadlocks the latchbolt when the door closes, preventing the bolt from being pushed back without key or thumbturn operation.

This is the standard function for offices, schools, hospitals, hotels, and other high-use buildings where the occupant or building manager needs to lock the outside grip from inside during occupied periods without abandoning the space. The thumbturn control is the mechanism that gives the ML2054 its office function characteristic: it toggles the outside grip between free-operating and key-only modes without requiring a key from either side to make that change. The ML2054 is also multi-function capable, allowing configuration changes to support other ANSI functions within the ML2000 platform.

ML2000 series construction and handing

The ML2000 series is built for the conditions that Grade 1 hardware is designed for: daily cycling at high volume over years of continuous service. The latchbolt uses a two-piece mechanical design with an anti-friction insert measuring 5/8" x 1" with a 3/4" throw, which reduces wear at the latch face under repeated contact with the strike. The patented Quick Reversible latchbolt allows the lock to be re-handed without disassembling the lockcase — a practical advantage on job sites where door handing gets confirmed late or changes during installation. The armored front is wrought brass, bronze, or stainless steel and attaches by machine screws to the lockcase front.

The 8" x 1-1/4" heavy-gauge steel front accommodates flat doors and doors beveled 1/8" in 2". The furnished front width is 1-1/16" with an optional D138 wide front for 1-3/8" wide door preparations. Standard door thickness is 1-3/4" with a 2-3/4" backset. The LW Lustra lever returns to within 1/2" of the door face, meeting California State Fire Marshal requirements. UL listing covers A label and lesser class doors, single up to 4' x 10' and pairs up to 8' x 10'.

Cylinder options, keying, and strike

The standard cylinder is brass 6-pin in the L4 keyway, shipping with two nickel silver keys. A 7-pin cylinder and interchangeable core (IC) options are available for facilities running master key systems that require those configurations. Master keying and construction master keying are both available at ordering. The ANSI straight lip strike is wrought brass, bronze, or stainless steel, measuring 4-7/8" x 1-1/4" with a 1-1/8" lip to center. Optional lip lengths and ANSI wrought strike boxes are available for non-standard frame conditions. Browse the complete Corbin Russwin ML2000 Series for other functions, lever styles, and rose combinations. The full mortise locks category covers coordinating hardware across all brands and grades, and the complete Corbin Russwin product range is available on this site.

Select your finish, cylinder keyway, and keying option when ordering. Confirm door thickness and front width requirement before specifying.