Corbin Russwin CL3140NT Exit Latch Grade 1 Vandal Resistance Cylindrical Lever Lock

Corbin Russwin CL3140NT Non-Keyed Exit Latch Cylindrical Lever Lock | Grade 1 Vandal Resistant with T-Zone Construction

Commercial-Grade Exit Latch Security with Patented T-Zone Durability

The Corbin Russwin CL3140NT is a patented Grade 1 non-keyed cylindrical lever lock engineered for demanding commercial exit applications under ANSI function F89 (Exit Latch). Designed for door thicknesses of 1-3/4" to 2" with a 2-3/4" backset, this leverset features a deadlocking latchbolt operated by the inside lever, while the outside lever remains always locked in a freewheeling position for secure one-way egress. The CL3100 Series T-Zone construction interlocks the aligning and latch tubes to form a rugged torque-resistant “T” in the critical twist area, tested to over 15 million cycles and exceeding ANSI/BHMA A156.2 Series 4000 Grade 1 standards by 15 times. The unit is fire rated and non-handed, retrofitting most standard 161 cylindrical lock door preps for straightforward installation.

Professional Features & Benefits

• Door Thickness & Backset Compatibility: Engineered for 1-3/4" to 2" door thicknesses with a 2-3/4" backset, accommodating a wide range of commercial door configurations.
• Exceptional Cycle Durability: T-Zone construction tested to over 15 million cycles, exceeding ANSI/BHMA Grade 1 standards by 15 times for unmatched long-term reliability in high-traffic applications.
• Vandal-Resistant T-Zone Construction: The unique interlocking of the aligning and latch tubes creates a rugged torque-resistant “T” in the critical twist area, providing strength and durability far exceeding ANSI/BHMA A156.2 Series 4000 Grade 1 standards.
• ANSI F89 Exit Latch Function: Outside lever always locked (freewheeling in locked position) while inside lever remains always free, ensuring reliable one-way egress and deadlocking latchbolt operation.
• Non-Handed & Retrofit-Ready: Retrofits most standard 161 cylindrical lock door preps and is non-handed, simplifying installation and reducing inventory requirements.
• Fire Rated: Carries a fire rating for use in fire-rated door assemblies, supporting code compliance in commercial and institutional environments.
• Standard Strike Included: Ships with an ANSI curved lip strike measuring 4-7/8" x 1-1/4" x 1-1/4" lip to center for a complete, ready-to-install solution.
• Springlatch Specification: Features a square corner front springlatch measuring 2-1/4" x 1-1/8" with a 2-3/4" backset for precise, reliable latching performance.
• Sustainable Materials: Made from 68% post-consumer recycled content as per LEED MR credit 4, supporting green building initiatives.
• Microshield® Antimicrobial Coating Available: Available in 11 hardware finishes and optional Microshield® antimicrobial coating for hygiene-sensitive environments.
• Manufacturer Warranty: Backed by a 7 Year Limited warranty for added confidence and long-term protection.

Technical Specifications

• Subcategory: Cylindrical Locks
• Product Group: Mechanical Locks
• Series: CL3100 Series
• Grade: Grade 1
• Keyed Function: Non-Keyed
• Standard Latch: Springlatch - Square corner front, 2-1/4" x 1-1/8", 2-3/4" backset
• Standard Strike: ANSI Curved Lip 1-1/4" Lip Length
• Warranty: 7 Year Limited
• ANSI/BHMA: F789
• Product Subgroup: Bored Locksets
• Product Type: Leversets
• Keyed: No
• Commercial/Residential: Commercial
• Function Description: Deadlocking latchbolt by lever inside. Outside lever always locked (lever handle is freewheeling in locked position). Inside lever always free.
• Lock Type: Cylindrical
• Handle Type: Lever
• Lock Function: Exit Only
• Product Attribute: Cylindrical Locks
• Product Model: CL3140NT
• Product Function: Exit
• Door Hand Direction: Non-Handed
• Door Thickness Range: 1-3/4" to 2"
• Fire Rating: Yes
• Product Category: Mechanical Locks
• Product Substrate: Steel, Zinc dichromated for corrosion resistance
• Backset (Distance): 2-3/4"
• Department: Door Hardware

Professional Applications

• Commercial Office Buildings
• Educational Facilities – K-12 and Universities
• Healthcare Institutions and Hospitals
• Retail Establishments
• Industrial and Warehouse Facilities
• Public Buildings and Government Facilities
• High-Traffic Institutional Environments

Anti-Microbial Option

The Corbin Russwin CL3100 Series is available with Microshield® antimicrobial coating, providing an additional layer of hygiene protection suitable for healthcare, institutional, and other environments where surface cleanliness is a priority. This option is available across the series' 11 hardware finishes.

Why Choose Corbin Russwin Quality?

Corbin Russwin CL3100 Series cylindrical lever locks are built to the highest quality standards, with T-Zone construction tested to over 15 million cycles — exceeding ANSI/BHMA A156.2 Series 4000 Grade 1 standards by 15 times — and a substrate of steel with zinc dichromated corrosion resistance for lasting durability. The CL3140NT is backed by a 7 Year Limited warranty and is made from 68% post-consumer recycled content as per LEED MR credit 4, reflecting a commitment to both performance and sustainability. Engineered for demanding commercial applications where dependable exit function and vandal-resistant construction are essential.