Marks USA MAR195SB 195SB Communicating Classroom Clutched Lever Lockset with Marks C Keyway, 6 Pin, 2-3/4" Backset, Grade 1

Marks USA 195SB Communicating Classroom Clutched Lever Lockset — Marks C Keyway, 6 Pin, Grade 1

The Marks USA 195SB is a commercial-grade communicating classroom cylindrical lever lockset from the 195 Series, engineered with a unique stainless steel clutch mechanism that disengages the levers from the retractor when locked — eliminating lever droop and dramatically reducing wear on internal components. Built on a cast retractor with bronze roller bearings, this lockset exceeds BHMA Grade 1 specifications by 300%, achieving over 3.6 million cycles for exceptional long-term reliability. It features a 2-3/4" backset, Marks "C" keyway with 6-pin cylinder, and is 3-Hour Fire Rated for demanding commercial door applications.

Key Features

• Clutch Mechanism: Unique stainless steel clutch disengages levers from the retractor and interior mechanisms when locked, allowing levers to swing freely without resistance — eliminating lever droop and reducing component wear.
• Exceptional Durability: Exceeds BHMA Grade 1 specifications by 300% with over 3.6 million cycles tested, ensuring long-term reliability in high-traffic commercial environments.
• Cast Retractor with Bronze Roller Bearings: Solid cast zamac levers with 1/2" return ride on bronze roller bearings for smooth, consistent operation over millions of cycles.
• Backset & Door Compatibility: Standard 2-3/4" backset (also available in 2-3/8"); accommodates door thickness of 1-5/8" to 1-7/8"; use K1904 spacer for 1-3/8" doors.
• Latch Specifications: Latch #1834 with 1-1/8" x 2-1/4" front, 9/16" throw, and stainless steel nose for deadlocking performance.
• Rose & Strike Details: Thru-bolted roses, 3-7/16" diameter, spring loaded with 2 #10 thru-bolts; includes Strike #1135, 4-7/8" ASA curved lip strike.
• 3-Hour Fire Rated: Certified for use on fire-rated door assemblies, meeting stringent life-safety code requirements.
• Marks Lifetime Mechanical Warranty: Backed by Marks USA's Lifetime Mechanical Warranty for added confidence and long-term value.

Certifications & Compliance

• ANSI/BHMA Grade 1 — Exceeds specification by 300% (over 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

• Educational Facilities and Classroom Corridors
• Commercial Office Buildings
• Healthcare Institutions
• Government and Municipal Buildings
• Multi-Tenant Residential and Mixed-Use Properties
• Retail and Hospitality Establishments
• Industrial and Institutional Facilities

Why Marks USA 195SB?

Marks USA 195 Series locksets are built around a proprietary stainless steel clutch and bronze roller bearing chassis that exceeds BHMA Grade 1 durability standards by 300% — surpassing 3.6 million cycles in testing. The solid cast zamac lever construction, 3-Hour Fire Rating, and UL listing make the 195SB a professional-grade solution engineered for the most demanding commercial door applications where long-term performance and low maintenance are essential.