Corbin Russwin ML2075 Grade 1 Mortise Security Entrance or Office Lockset

Corbin Russwin ML2075-KEYED ML2000 Series Grade 1 Mortise Security Entrance/Office Lock, Field Reversible

Commercial-Grade Mortise Security Entrance and Office Lock with Integrated Deadbolt Protection

The Corbin Russwin ML2075-KEYED is a Grade 1 mortise lock from the ML2000 Series, engineered for demanding commercial, institutional, industrial, and government applications. This security entrance/office function lock features a latchbolt operable by grip from either side unless the outside grip is locked by projection of the deadbolt, with the deadbolt thrown or retracted by outside key or inside thumbturn. Constructed of heavy-gauge steel with a 1" stainless steel deadbolt and patented Quick Reversible latchbolt, it is designed for 1-3/4" (44mm) door thickness and includes an ANSI straight lip strike measuring 4-7/8" (124mm) x 1-1/4" (32mm) x 1-1/8" (29mm) lip to center. The ML2075 has been UL cycle tested above and beyond requirements, completing 14.5 Million Cycles (Verification ID: V875753), making it an ideal choice for offices, schools, hospitals, hotels, and other high-use environments.

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 Government Facilities
• Multi-Tenant Residential and Mixed-Use Properties
• Institutional and High-Traffic Public Buildings

Tamper-Resistant Design

The ML2000VR (Vandal Resistant) Series option provides vandal-resistant stainless steel escutcheons with tapered edges and Torx® pin tamper-resistant screws, further discouraging intrusion and abuse in high-risk environments. When paired with Corbin Russwin patented high-security Pyramid or Access 3® cylinders, any door can become a formidable barrier to intruders.

Why Choose Corbin Russwin Quality?

Corbin Russwin ML2000 Series mortise locks deliver professional-grade reliability through heavy-gauge steel construction and a patented Quick Reversible latchbolt with a 1" stainless steel deadbolt, UL cycle tested to an exceptional 14.5 Million Cycles (Verification ID: V875753). Every ML2075 is backed by a 10 Year Limited warranty and offers a wide variety of trim designs and finishes, including the Vineyard™ and Muséo® Collections, ensuring both performance and aesthetic continuity across any commercial project. Engineered for the most demanding commercial, institutional, and government applications where dependable security is essential.