Corbin Russwin ML20906 Grade 1 Fail Safe Electrified Mortise Lock, Outside Grip Locked when Energized, Outside Cylinder Override, Lever x Lever Body Only

Corbin Russwin ML20906-LL-SAF Fail Safe Electrified Mortise Lock with Outside Grip Locked When Energized and Cylinder Override, Lever x Lever Body Only

Grade 1 Electrified Mortise Lockbody for High-Traffic Commercial Applications

The Corbin Russwin ML20906-LL-SAF is a fail safe electrified mortise lockbody from the ML2000 Series, engineered for demanding commercial, institutional, industrial, and government environments. This lockbody features outside grip locking when energized, with latchbolt operation by grip from either side when de-energized, and an outside cylinder override for key access when the lock is energized. Constructed of heavy-gauge steel with a 1" stainless steel deadbolt and patented Quick Reversible latchbolt, the ML20906 is designed for 1-3/4" (44mm) standard door thickness and draws 500mA peak / 15mA holding current. The ML2000 Series has achieved UL cycle testing above and beyond requirements, completing over 14.5 million cycles (Verification ID: V875753), and carries a 10-year limited warranty.

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 Hospitality Properties
• Industrial and Government Facilities
• Multi-Tenant Residential and Mixed-Use Properties
• High-Traffic Institutional Environments

Why Choose Corbin Russwin Quality?

Corbin Russwin ML2000 Series mortise locks deliver professional-grade reliability backed by heavy-gauge steel construction, a 1" stainless steel deadbolt, and UL cycle testing verified at over 14.5 million cycles (Verification ID: V875753). The ML20906-LL-SAF is covered by a 10 Year Limited warranty, providing long-term confidence for facility managers and security professionals. Engineered for the most demanding commercial, institutional, and government applications where dependable fail safe performance and life safety are essential.