Corbin Russwin ML2054 Grade 1 Entrance or Office Mortise Body Only

Corbin Russwin ML2054-LL Entrance/Office Mortise Lockbody, Grade 1, Field Reversible, 1-3/4" Door

Commercial-Grade Mortise Lock Body for Entrance and Office Applications

The Corbin Russwin ML2054-LL is a Grade 1 mortise lockbody from the ML2000 Series, engineered for demanding entrance and office applications in commercial, institutional, industrial, and government environments. Conforming to ANSI function F04, this lockbody allows the latchbolt to operate freely from either side unless the outside grip is locked, with the outside grip controlled by thumbturn and the inside grip always free. Constructed of heavy-gauge steel with a 1" stainless steel deadbolt and designed for 1-3/4" (44mm) door thickness, the ML2054-LL delivers the durability and versatility required for high-traffic facilities including offices, schools, hospitals, and hotels.

Professional Features & Benefits

• ANSI/BHMA Grade 1 mortise lock per A156.13 Series 1000, Operational and Security Grade 1
• UL Cycle above and beyond: 14.5 Million Cycles (Verification ID: V875753)
• Patented Quick Reversible latchbolt — reverse handing without disassembling the lock case
• Multi-function capability: 12 functions configurable from one ML2054 lockbody
• Heavy-gauge steel lockcase 5-7/8" x 4" x 15/16"; 1" stainless steel deadbolt, 1" throw
• 3/4" (19mm) throw anti-friction two-piece latchbolt requires less force to close
• Wide variety of trim designs including Muséo®, Vineyard™, Behavioral Health (BHSS/BLSS)
• Status indicator options for locked/unlocked visibility (sectional and escutcheon trim)
• Motorized Electric Latch Retraction (MELR) available for ML20900 series
• Thru-bolted trim designs for proper alignment and increased security
• Can be used with new or existing Corbin Russwin key systems; accepts most other manufacturers' cylinders
• UL/cUL listed, UL10C positive pressure; 3-hour fire door up to 4' x 10' single or 8' x 10' pair
• Ten-year mechanical warranty; five-year MELR; two-year electrical

Technical Specifications

• Grade: ANSI/BHMA A156.13 Series 1000, Operational and Security Grade 1
• Handing: Handed; quick reversible — re-handed without disassembling the lock case
• Door Thickness: 1-3/4" (44mm) standard; optional thicknesses available
• Backset: 2-3/4" (70mm)
• Lockcase: Heavy-gauge steel, 5-7/8" (149mm) x 4" (102mm) x 15/16" (24mm)
• Armored Front: Wrought brass, bronze, or stainless steel, 8" x 1-1/4"
• Latchbolt: 2-piece mechanical with anti-friction insert, 5/8" x 1" x 3/4" (19mm) throw
• Auxiliary Latchbolt: 9/16" (14mm) effective throw; deadlocking
• Deadbolt: One-piece stainless steel, 19/32" x 1-1/4" x 1" (25mm) throw
• Strike: Wrought brass, bronze, or stainless steel, ANSI straight lip, 4-7/8" x 1-1/4" x 1-1/8" lip to center
• Cylinder: Brass, 6-pin L4 keyway, 0-bitted standard
• Spacing: C. to c. knob/lever to cylinder: 3-5/8" (92mm); knob/lever to thumbturn: 2-7/16" (62mm)
• Certifications: ANSI/BHMA A156.13 Grade 1; UL/cUL UL10C 3-hour positive pressure; ADA A117.1; California State Fire Marshal; Windstorm/Hurricane certified
• Warranty: Ten-year mechanical; five-year MELR; two-year electrical

Professional Applications

• Commercial Office Buildings
• Educational Facilities and Schools
• Healthcare Institutions and Hospitals
• Hotel and Hospitality Properties
• Industrial and Warehouse Facilities
• Government and Municipal Buildings
• Institutional and High-Traffic Commercial Environments

Tamper-Resistant Design

The ML2054-LL is compatible with the ML2000VR (Vandal Resistant) Series, which features stainless steel escutcheons with tapered edges and Torx® pin tamper-resistant screws. When paired with Corbin Russwin's patented high-security Pyramid or Access 3® cylinders, the ML2054-LL provides a formidable barrier against intrusion and abuse in demanding commercial environments.

Why Choose Corbin Russwin Quality?

Corbin Russwin ML2000 Series mortise lock products deliver professional-grade reliability through heavy-gauge steel construction and a patented Quick Reversible latchbolt, with UL cycle testing verified at 14.5 Million Cycles (Verification ID: V875753) for proven long-term performance. The ML2054-LL is backed by a 10 Year Limited warranty, providing lasting confidence for facility managers and security professionals. Engineered for the most demanding commercial, institutional, and government applications where dependable security and operational versatility are essential.