Corbin Russwin ML20915 Grade 1 No Cylinder Override, Both Grips Lock, Mortise Electrified Lever Lockset, AS-Armstrong Lever

Corbin Russwin ML20915-AS Mortise Electrified Lever Lockset, No Cylinder Override, Both Grips Lock, Armstrong Lever

ANSI/BHMA Grade 1 Electrified Mortise Security for High-Traffic Commercial Applications

The Corbin Russwin ML20915-AS is a heavy-duty mortise electrified lever lockset from the ML2000 Series, engineered for demanding, high-traffic environments where both security and access control integration are essential. Featuring the Armstrong (AS) lever design, this lockset operates with No Cylinder Override and a Both Grips Lock function, meaning both grips are locked when the lock is energized (SAF mode) or when the lock is not energized (SEC mode), with the auxiliary latch deadlocking the latchbolt in both configurations. Built to ANSI/BHMA A156.13 Series 1000 Operational and Security Grade 1 standards, it accommodates standard door thicknesses from 1-3/8" to 4" and a standard backset of 2-3/4", with a 3/4" latchbolt throw. The lock is UL listed, UL10c compliant, ULC listed, ADA compliant, and rated for use on fire doors up to and including 3-hour fire ratings.

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
• Healthcare Institutions and Medical Facilities
• Educational Facilities and Campuses
• Government and Municipal Buildings
• Retail and Hospitality Establishments
• Industrial and Warehouse Facilities
• Multi-Tenant Residential and Mixed-Use Properties

Why Choose Corbin Russwin Quality?

Corbin Russwin ML2000 Series mortise electrified locksets are built to heavy-gauge steel construction and certified to ANSI/BHMA A156.13 Series 1000 Operational and Security Grade 1 standards, far exceeding minimum requirements for durability and longevity in high-traffic, abusive environments. The ML20915-AS is backed by a ten-year mechanical warranty, five-year MELR warranty, and two-year electrical warranty, and carries UL, ULC, ADA, ASTM E330, and Florida Building Code Windstorm certifications. With EcoFlex® technology delivering up to 89% energy savings and seamless integration with leading access control platforms and key systems, Corbin Russwin delivers professional-grade reliability engineered for the most demanding commercial applications.