Marks USA MAR195RSB 195RSB Communicating Classroom Clutched Lever Lockset, Small Format IC, Less Core, Grade 1

Marks USA 195RSB Communicating Classroom Clutched Lever Lockset — Small Format IC, Less Core, Grade 1

The Marks USA 195RSB is a commercial-grade communicating classroom clutched lever lockset from the 195 Series, engineered for demanding institutional environments where durability and long-term performance are essential. Built on a cylindrical chassis with cast retractors on bronze roller bearings, this lockset features a unique stainless steel clutch mechanism that disengages the levers from the retractor when locked, eliminating lever droop and dramatically reducing wear. Rated to exceed BHMA Grade 1 specifications by 300% — over 3.6 million cycles — and carrying a 3-Hour Fire Rating, the 195RSB is designed for doors with a thickness of 1-5/8" to 1-7/8" and supports both 2-3/8" and 2-3/4" backsets. The Small Format Interchangeable Core (SFIC) configuration ships less core for maximum keying flexibility.

Key Features

• Exceptional Cycle Durability: Exceeds BHMA Grade 1 specifications by 300%, rated for over 3.6 million cycles for unmatched long-term reliability in high-traffic applications.
• Unique Clutch Mechanism: Stainless steel clutch and bronze bearings disengage levers from interior lock mechanisms when locked, eliminating lever droop and dramatically reducing component wear.
• 3-Hour Fire Rating: Certified 3-Hour Fire Rated construction for use in fire-rated door assemblies in commercial and institutional settings.
• Dual Backset Compatibility: Supports both 2-3/8" and 2-3/4" backsets (standard backset: 2-3/4") for flexible installation across a variety of door preparations.
• Door Thickness Range: Accommodates doors 1-5/8" to 1-7/8" thick; use K1904 spacer for 1-3/8" doors.
• Latch & Strike Specifications: Includes Latch #1834 with 1-1/8" x 2-1/4" front, 9/16" throw, and stainless steel nose; Strike #1135 is a 4-7/8" ASA curved lip strike.
• Solid Cast Zamac Levers: Levers are solid cast zamac with 1/2" return, mounted on thru-bolted roses (3-7/16" dia., spring-loaded with 2 #10 thru-bolts) for secure, lasting attachment.
• Small Format IC, Less Core: Ships without core for compatibility with small format interchangeable core systems, providing maximum keying and master key flexibility.
• Marks Lifetime Mechanical Warranty: Backed by Marks' Lifetime Mechanical Warranty for long-term confidence and protection.

Certifications & Compliance

• ANSI/BHMA Grade 1 — Exceeds by 300% (3.6 million cycles)
• UL Listed
• 3-Hour Fire Rated
• ADA Compliant
• Marks Lifetime Mechanical Warranty

Technical Specifications

• Series: 195 Series
• Product Group: Mechanical Locks
• Product Subgroup: Bored Locksets
• ANSI/BHMA: ANSI/BHMA, UL Listed
• Commercial/Residential: Commercial
• Function Description: Latch retracted by knobs/levers at all times
• ADA Compliant: Yes
• Keyed: No
• ANSI Function: F75
• Product Function: Passage/Hall/Closet
• Latch Type Specification: Deadlocking
• Product Category: Mechanical Locks
• Department: Door Hardware

Typical Applications

• K–12 Educational Facilities and Classrooms
• College and University Campus Buildings
• Healthcare and Hospital Corridors
• Government and Municipal Buildings
• Commercial Office Buildings
• Institutional and Multi-Use Facilities
• Fire-Rated Door Assemblies in High-Traffic Areas

Why Marks USA 195RSB?

Marks USA 195 Series locksets are built on a cylindrical chassis with cast retractors on bronze roller bearings and a proprietary stainless steel clutch mechanism that sets them apart from standard lever locksets. By exceeding BHMA Grade 1 requirements by 300% — achieving over 3.6 million cycles — and carrying a 3-Hour Fire Rating with ADA compliance and UL listing, the 195RSB delivers professional-grade performance engineered for the most demanding commercial and institutional environments. Backed by the Marks Lifetime Mechanical Warranty, this lockset is a dependable, lower-maintenance solution for facilities that cannot afford downtime.