Marks USA MAR175RS 175RS IC Classroom Lever Lockset — Grade 2 Survivor Series, American Lever, IC Less Core, Classroom Function

Marks USA 175RS IC Classroom Lever Lockset — Grade 2 Survivor Series, American Lever, IC Less Core

The Marks USA 175RS IC Classroom Lever Lockset is a commercial-grade cylindrical lockset from the Survivor Series, engineered for demanding environments where durability and low maintenance are essential. Built with a unique stainless steel clutch mechanism and bronze roller bearings on a cast retractor chassis, this lockset exceeds BHMA Grade 1 specifications by 300%, achieving over 3.6 million cycles. It accommodates door thicknesses of 1-5/8" to 1-7/8" (with optional K1904 spacer for 1-3/8" doors), supports 2-3/8" and 2-3/4" backsets, and carries a 3-hour fire rating — making it an ideal solution for classroom and institutional applications.

Key Features

• Exceptional Cycle Durability: Exceeds BHMA Grade 1 specifications by 300% with over 3.6 million cycles, ensuring long-term reliability in high-traffic commercial environments.
• Unique Clutch Mechanism: Stainless steel clutch disengages levers from the retractor when locked, allowing levers to swing freely without resistance — dramatically reducing wear, abuse, and lever droop.
• Cast Retractor on Bronze Roller Bearings: Solid cast Zamac levers with 1/2" return and bronze roller bearings provide a strong, durable chassis for millions of cycles of dependable operation.
• Backset & Door Compatibility: Supports 2-3/8" and 2-3/4" backsets; fits door thicknesses of 1-5/8" to 1-7/8"; use K1904 spacer for 1-3/8" doors.
• Latch Specifications: Latch #1134 with 1-1/8" x 2-1/4" front, 1/2" throw, and stainless steel nose for smooth, reliable latching performance.
• Thru-Bolted Rose Assembly: 3-1/4" diameter roses are thru-bolted with spring-loaded 2-#10 thru-bolts for secure, stable mounting.
• 3-Hour Fire Rated: Certified for 3-hour fire-rated door assemblies, supporting life-safety compliance in commercial and institutional buildings.
• Marks Lifetime Mechanical Warranty: Backed by Marks USA's lifetime mechanical warranty for added confidence and long-term value.
• ADA Compliant: Lever design meets ADA accessibility requirements for commercial door hardware applications.

Certifications & Compliance

• ANSI/BHMA Certified — Exceeds Grade 1 Specifications by 300%
• UL Listed
• 3-Hour Fire Rated
• ADA Compliant
• Marks USA Lifetime Mechanical Warranty

Technical Specifications

• Series: 175 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
• Door Thickness Range: 1-3/4"
• Strike Classification: ANSI, 1-1/4" x 4-7/8", 1-1/4" Lip, Square Corner
• Product Category: Mechanical Locks
• Department: Door Hardware

Typical Applications

• K–12 School Classrooms and Educational Facilities
• College and University Campus Buildings
• Healthcare and Medical Office Facilities
• Commercial Office Buildings
• Government and Municipal Buildings
• Institutional and Multi-Use Public Facilities
• Retail and Commercial Tenant Spaces

Why Marks USA 175RS?

Marks USA 175RS Survivor Series locksets are built to outperform standard commercial hardware, 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. Engineered for demanding institutional and commercial environments, the 175RS delivers a lower-maintenance, longer-lasting solution with 3-hour fire rating, ADA compliance, and UL listing for complete peace of mind.