Marks USA 195RDB Classroom Intruder Clutched Lever Lockset, Small Format IC, Less Core, 2-3/4" Backset, Grade 1

Marks USA 195RDB Classroom Intruder Clutched Lever Lockset — Small Format IC, Less Core, 2-3/4" Backset, Grade 1

The Marks USA 195RDB is a commercial-grade cylindrical Classroom Intruder Clutched Lever Lockset from the 195 Series, engineered for high-security educational and institutional environments. Featuring a unique stainless steel clutch mechanism and bronze roller bearings, this lockset exceeds BHMA Grade 1 specifications by 300%, achieving over 3.6 million cycles for unmatched long-term durability. Designed for Small Format Interchangeable Core (SFIC) applications and supplied less core, it accommodates a 2-3/4" backset and fits door thicknesses of 1-5/8" to 1-7/8" (use K1904 spacer for 1-3/8" doors). The 195RDB carries a 3-Hour Fire Rating and is UL Listed and ANSI/BHMA certified, making it a trusted solution for life-safety compliance.

Key Features

• Exceeds BHMA Grade 1 by 300%: Tested to over 3.6 million cycles, far surpassing standard Grade 1 requirements for exceptional longevity in high-traffic applications.
• Unique Clutch Mechanism: Stainless steel clutch disengages levers from the retractor when locked, allowing levers to swing freely — eliminating lever droop and dramatically reducing internal wear and abuse.
• Cast Bronze Roller Bearings: Cylindrical lock chassis constructed with cast retractors on bronze roller bearings for smooth, durable operation over millions of cycles.
• Door Thickness Compatibility: Fits doors 1-5/8" to 1-7/8" thick; K1904 spacer required for 1-3/8" doors. Supports both 2-3/8" and 2-3/4" backsets.
• Latch Specifications: Latch #1834 with 1-1/8" x 2-1/4" front, 9/16" throw, and stainless steel nose for reliable deadlocking performance.
• Solid Cast Zamac Levers: Levers feature solid cast zamac construction with 1/2" return, and thru-bolted roses at 3-7/16" diameter with spring-loaded 2-#10 thru-bolts for secure mounting.
• ANSI Strike Included: Ships with Strike #1135, a 4-7/8" ASA curved lip strike for standard ANSI door prep compatibility.
• 3-Hour Fire Rated: Meets 3-hour fire rating requirements for use in fire-rated door assemblies in commercial and institutional settings.
• Marks Lifetime Mechanical Warranty: Backed by Marks USA's Lifetime Mechanical Warranty for long-term confidence and reduced total cost of ownership.

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
• Latch Type Specification: Deadlocking
• Product Category: Mechanical Locks
• Department: Door Hardware

Typical Applications

• K–12 Schools and Educational Facilities (Classroom Intruder / Lockdown Function)
• Higher Education Campus Buildings
• Healthcare and Hospital Institutions
• Government and Municipal Buildings
• Commercial Office Buildings
• Multi-Tenant Residential and Mixed-Use Properties
• Industrial and Warehouse Facilities

Why Marks USA 195RDB?

Marks USA 195 Series locksets are built to outperform industry standards, with the 195RDB's stainless steel clutch and bronze roller bearing chassis tested to over 3.6 million cycles — exceeding BHMA Grade 1 by 300%. Engineered for demanding commercial and institutional environments where security, durability, and life-safety compliance are non-negotiable, the 195RDB delivers a lower-maintenance, longer-lasting solution backed by a Lifetime Mechanical Warranty.