Marks USA MAR295RDB 295RDB Classroom Intruder Lever Lockset — Curved Lever, Yale Large Format IC, Less Core, 2-3/4" Backset, Grade 1

Marks USA 295RDB Classroom Intruder Lever Lockset — Curved Lever, Yale Large Format IC, Less Core, 2-3/4" Backset, ANSI/BHMA Grade 1

The Marks USA 295RDB is a heavy-duty cylindrical classroom intruder lever lockset from the 295 Series, engineered for demanding commercial environments where security and longevity are paramount. Featuring a curved lever design with Yale Large Format Interchangeable Core (IC) compatibility (less core), this lockset ships with a 2-3/4" backset and an ANSI curved lip strike, and is rated for door thicknesses of 1-5/8" to 1-7/8" (a K1904 spacer is required for 1-3/8" doors). The chassis is constructed with cast retractors on bronze roller bearings and incorporates a unique stainless steel clutch mechanism that exceeds BHMA Grade 1 specifications by 300%, delivering over 3.6 million cycles of reliable operation.

Key Features

• Exceptional Cycle Durability: Exceeds BHMA Grade 1 specifications by 300% with over 3.6 million cycles tested, ensuring long-term reliability in high-traffic commercial applications.
• Unique Stainless Steel Clutch Mechanism: When locked, levers disengage from the retractor and interior mechanisms, swinging freely without resistance — dramatically reducing wear, eliminating lever droop, and lowering maintenance requirements.
• Cast Retractors on Bronze Roller Bearings: Heavy-duty chassis construction with solid cast zamac levers and bronze bearings provides exceptional durability and smooth operation over millions of cycles.
• Door Thickness Compatibility: Designed for doors 1-5/8" to 1-7/8" thick; compatible with 1-3/8" doors using the K1904 spacer accessory.
• Dual Backset Compatibility: Supports both 2-3/8" and 2-3/4" backsets for flexible installation across a variety of door preparations.
• Latch Specifications: Latch #1834 with a 1-1/8" x 2-1/4" front, 9/16" throw, and stainless steel nose for secure, reliable latching performance.
• Thru-Bolted Rose Assembly: 3-7/16" diameter roses are spring-loaded and secured with two #10 thru-bolts for a solid, tamper-resistant installation.
• 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 protection.

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: 295 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 (Classroom Intruder Lockdown)
• Higher Education Campus Buildings
• Healthcare Institutions and Medical Offices
• Commercial Office Buildings
• Government and Municipal Buildings
• Multi-Tenant Residential and Mixed-Use Properties
• Industrial and Institutional Facilities

Why Marks USA 295RDB?

Marks USA 295 Series cylindrical locksets are built to outlast the competition, with a proprietary stainless steel clutch and bronze roller bearing chassis that exceeds BHMA Grade 1 durability standards by 300% — surpassing 3.6 million cycles. The solid cast zamac levers, thru-bolted rose assembly, and 3-hour fire rating make the 295RDB an engineered solution for the most demanding commercial and institutional door security applications.