Corbin Russwin ML20915 Grade 1 Fail Safe Electrified Mortise Lock, Both Grips Locked when Not Energized, No Cylinder Override, Lever x Lever Body Only

Corbin Russwin ML20915 Fail Safe Electrified Mortise Lock Body, Both Grips Locked When Not Energized, Lever x Lever, Field Reversible

Grade 1 Commercial Electrified Mortise Lock Body for High-Traffic Applications

The Corbin Russwin ML20915 is a Fail Safe electrified mortise lock body from the ML2000 Series, engineered for demanding commercial, institutional, industrial, and government applications. In this fail safe configuration, both grips are locked when the lock is not energized, with no cylinder override, providing controlled access through lever x lever trim. Constructed of heavy-gauge steel with a 3/4" latchbolt and a 1" stainless steel deadbolt, this lockbody is designed for 1-3/4" (44mm) standard door thickness and features field-reversible handing. The ML2000 Series has been UL cycle tested beyond 14.5 million cycles (Verification ID: V875753), making it an exceptional choice for high-use environments such as 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
• Multi-Tenant Residential and Institutional Properties

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 beyond 14.5 million cycles (Verification ID: V875753). The ML20915 is backed by a 10 Year Limited warranty, providing long-term confidence for facility managers and security professionals. Engineered for the most demanding commercial applications, the ML2000 Series offers the versatility, durability, and security performance required in offices, schools, hospitals, and high-traffic institutional environments.