Marks USA MAR175DT 175DT Full Dummy Trim Cylindrical Leverset - Grade 2 Survivor Series, American Lever, ADA Compliant

Marks USA 175DT Full Dummy Trim Cylindrical Leverset — Grade 2 Survivor Series, American Lever

The Marks USA 175DT Full Dummy Trim is part of the Grade 2 Survivor Series, engineered for commercial environments where durability and long-term performance are essential. This cylindrical leverset features a solid cast Zamac American lever with a unique "clutch" mechanism that disengages the lever from internal components when locked, eliminating lever droop and reducing internal wear for a low-maintenance solution. Supporting door thicknesses from 1-5/8" to 1-7/8" (with spacer K1904 available for 1-3/8" doors), and fire-rated for up to 3 hours, the 175DT delivers flexibility and reliability across demanding applications. ANSI/BHMA Grade 2 certified and UL Listed, it meets the rigorous standards required for institutional and commercial use.

Key Features

• Door Thickness Compatibility: Supports door thicknesses from 1-5/8" to 1-7/8"; spacer K1904 available for 1-3/8" doors for versatile installation options.
• Backset Options: Standard 2-3/4" backset with optional 2-3/8" and 5" backset configurations to accommodate a variety of door preparations.
• Clutch Mechanism Design: Unique "clutch" mechanism disengages levers from the retractor and internal components when locked, allowing free swing without resistance — eliminating lever droop and minimizing internal wear.
• Heavy-Duty Construction: Solid cast Zamac lever with a robust cylindrical lock chassis featuring cast retractors on bronze roller bearings, supporting millions of cycles of reliable operation.
• Steel Latch with Stainless Steel Nose: Equipped with a steel latch, 1/2" throw, and a durable stainless steel nose for long-lasting performance in high-traffic settings.
• Thru-Bolted Spring-Loaded Roses: Thru-bolted, spring-loaded roses provide enhanced security and a secure, stable mounting on the door.
• IC Core Compatibility: Available in various interchangeable core formats including SFIC, Corbin Russwin, Medeco, Schlage, Yale, and more for flexible keying system integration.
• 3-Hour Fire Rating: Fire-rated for up to 3 hours, meeting code requirements for fire-rated door assemblies in commercial and institutional applications.
• ADA Compliant: Meets ADA accessibility requirements, making it suitable for public and institutional facilities requiring compliant hardware.

Certifications & Compliance

• ANSI/BHMA Grade 2
• UL Listed
• ADA Compliant
• 3-Hour Fire Rating
• ANSI Function F87 — Asylum/Institution/Utility

Technical Specifications

• Product Group: Mechanical Locks
• Product Subgroup: Bored Locksets
• ANSI/BHMA: ANSI/BHMA, UL Listed
• Function Description: Deadlocking latch bolt operated by key in lever from either side. Both levers are always inoperable.
• Front Size: 1-1/8" x 2-1/4"
• ADA Compliant: Yes
• Keyed: Yes
• ANSI Function: F87
• Product Function: Asylum/Institution/Utility
• 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

• Institutional and Asylum Facilities
• Healthcare and Medical Institutions
• Educational Facilities and Schools
• Commercial Office Buildings
• Government and Municipal Buildings
• Multi-Tenant Residential Properties
• Industrial and Warehouse Facilities

Why Marks USA 175DT?

Marks USA 175DT Survivor Series leversets are built for the most demanding commercial and institutional environments, featuring a solid cast Zamac lever, bronze roller bearing retractors rated for millions of cycles, and a patented clutch mechanism that virtually eliminates lever droop and internal wear. With ANSI/BHMA Grade 2 certification, UL Listing, ADA compliance, and a 3-hour fire rating, the 175DT delivers the professional-grade performance and code compliance that architects, specifiers, and facility managers require.