Corbin Russwin ML20914 Grade 1 Fail Secure Electrified Mortise Lock, Both Grips Locked when Not Energized, Outside Cylinder Override, Lever x Lever Body Only

Corbin Russwin ML20914-LL Fail Secure Electrified Mortise Lock Body with Outside Cylinder Override, Lever x Lever

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

The Corbin Russwin ML20914-LL is a fail secure electrified mortise lock body from the ML2000 Series, engineered for demanding commercial, institutional, industrial, and government environments. In fail secure operation, both grips are locked when the lock is not energized, and latchbolt retraction by grip from either side is available only when the lock is energized; outside cylinder override allows latchbolt retraction by key when the lock is not energized. Constructed of heavy-gauge steel with a 1" stainless steel deadbolt and patented Quick Reversible latchbolt, this lockbody is rated for a standard door thickness of 1-3/4" (44mm) and draws 500mA peak / 15mA holding current. The auxiliary latch deadlocks the latchbolt for added security, and handing is fully field reversible without disassembling the lock case.

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
• Hotels and Multi-Tenant Residential Properties
• Industrial and Warehouse Facilities
• Government and Municipal Buildings
• High-Security Access Control Environments

Tamper-Resistant Design

The ML2000 Series offers the ML2000VR (Vandal Resistant) variant featuring vandal-resistant stainless steel escutcheons with tapered edges and Torx® pin tamper resistant screws, providing a formidable barrier against intrusion and abuse in high-risk environments.

Why Choose Corbin Russwin Quality?

Corbin Russwin ML2000 Series mortise lock products deliver professional-grade reliability with heavy-gauge steel construction and a 1" stainless steel deadbolt, proven through UL Cycle testing completed at 14.5 Million Cycles (Verification ID: V875753). Backed by a 10 Year Limited warranty and Grade 1 certification, the ML20914-LL is engineered for the most demanding commercial applications where dependable fail secure performance and long-term durability are essential.