Marks USA MAR175S 175S Classroom Lever Lockset — Grade 2 Survivor Series, ADA Compliant, American Lever

Marks USA 175S Classroom Lever Lockset — Grade 2 Survivor Series, ADA Compliant

The Marks USA 175S Classroom Lever Lockset is part of the 175 Grade 2 Economy Series, engineered to deliver the performance and quality of a Grade 1 lockset at a Grade 2 price point. Featuring a cylindrical lock design with a deadlocking latch bolt and American-style lever trim, this lockset is purpose-built for classroom security applications where the outside lever is locked by key while the inside lever remains always free. Designed for doors with a 1-3/4" thickness and a 2-3/4" backset, the 175S meets ANSI/BHMA standards and is UL Listed, making it a trusted choice for commercial environments including office buildings, schools, universities, and hospitals.

Key Features

• Classroom Function (ANSI F84): Deadlocking latch bolt operated by levers; outside lever locked by key while inside lever remains always free — ideal for classroom security requirements.
• Grade 2 Economy Series Value: Marks USA 175 Series delivers Grade 1-level performance and quality at a Grade 2 price, maximizing value for commercial projects.
• Precise Dimensional Specifications: Designed for 1-3/4" door thickness with a 2-3/4" backset and a 1/2" latch throw for reliable, consistent operation.
• Front Plate & Strike Sizing: Front size of 1-1/8" x 2-1/4"; includes ANSI-standard strike measuring 1-1/4" x 4-7/8" with 1-1/4" lip and square corner for clean, code-compliant installation.
• ADA Compliant Lever Design: American lever style meets ADA accessibility requirements, ensuring compliance in public and commercial facilities.
• Deadlocking Latch Bolt: Provides added security by preventing the latch from being pushed back without proper key operation, reducing vulnerability to shimming attacks.
• Cylindrical Bored Lock Construction: Standard cylindrical lock format simplifies installation in pre-bored doors and is compatible with common door prep specifications.
• Broad Commercial Applicability: Suitable for office buildings, schools, universities, hospitals, and other high-traffic commercial environments requiring dependable access control.

Certifications & Compliance

• ANSI/BHMA Certified
• UL Listed
• ADA Compliant
• ANSI Function F84 (Classroom)

Technical Specifications

• Series: 175 Series
• Latch Throw: 1/2"
• Product Group: Mechanical Locks
• Product Subgroup: Bored Locksets
• Product Type: Cylindrical Locks
• Subcategory: Cylindrical Locks
• ANSI/BHMA: ANSI/BHMA, UL Listed
• Lock Type: Cylindrical
• Function Description: Deadlocking latch bolt by levers. Outside knob/lever is locked by key in outside lever. Inside knob/lever is always free.
• Front Size: 1-1/8" x 2-1/4"
• ADA Compliant: Yes
• Keyed: Yes
• ANSI Function: F84
• Product Attribute: Cylindrical Locks
• Product Function: Classroom
• Door Thickness Range: 1-3/4"
• Latch Type Specification: Deadlocking
• Strike Classification: ANSI, 1-1/4" x 4-7/8", 1-1/4" Lip, Square Corner
• Product Category: Mechanical Locks
• Backset (Distance): 2-3/4"
• Department: Door Hardware

Typical Applications

• K-12 Schools and University Classrooms
• Commercial Office Buildings
• Healthcare Institutions and Hospitals
• Government and Municipal Buildings
• Multi-Tenant Residential and Mixed-Use Properties
• Retail Establishments
• Industrial and Warehouse Facilities

Why Marks USA 175S?

Marks USA 175 Series cylindrical locksets are engineered to bridge the gap between economy pricing and professional-grade performance, delivering ANSI/BHMA-certified, UL Listed quality in a bored cylindrical format. With ADA-compliant American lever trim, a deadlocking latch bolt, and precise dimensional specifications including a 1-3/4" door thickness range and 2-3/4" backset, the 175S is built to meet the rigorous demands of high-traffic commercial and institutional environments. For facilities managers and contractors seeking reliable classroom security hardware without compromising on compliance or durability, the Marks USA 175S is a proven, value-driven solution.