ASSA ABLOY One System 72/100/R3x24/235 Fire-Rated Mortise Lock 15.5mm Narrow Case EN 1634

Product Overview

The Assa Abloy One System 72/100/R3x24/235 is a mortise lock specifically engineered for use in fire-rated single-leaf doors, meeting the stringent requirements of EN 1634. Tested for more than one million cycles and supporting leaf weights up to 300 kg, it is suitable for commercial and high-traffic environments where safety and durability are paramount. The closed lock case design shields internal components from dust and debris, ensuring extended, maintenance-free operation under demanding conditions.

What differentiates this lock from generic fire-rated mortise locks is its reduced lock case width of 15.5 mm, which enables installation in narrow-profile aluminum doors without compromising stability or security. This feature is highly valued in modern architectural projects that utilize slim aluminum door profiles and require certified fire protection. Particularly well-suited for commercial contractors and OEM manufacturers supplying office buildings, hotels, or public-sector projects with stringent fire safety and lifecycle requirements.

Key Features

• Lock case width 15.5 mm ? supports installation in narrow-profile aluminum doors


• Tested for 1,000,000+ cycles ? ensures long operational life in high-traffic settings


• Fire resistance EN 1634 ? certified for use in fire-rated single-leaf doors


• Reversible latchbolt ? fits both left- and right-hand doors for flexible stockholding


• Rim with anti-manipulation design ? enhances burglary resistance


• Max. leaf weight 300 kg ? suitable for very heavy commercial doors


• Stainless steel faceplate ? corrosion-resistant for exterior or interior use

Technical Specifications

• Lock Case Width: 15.5 mm


• Backset: 100 mm


• Distance (Centers): 72 mm


• Spindle Hole: 9 mm


• Bolt Throw: 20 mm


• Max. Door Weight: 300 kg


• Faceplate Material: Stainless steel


• Certification: EN 1634


• Environmental Product Declaration: EN 18804 compliant


• Cylinder Type: Europrofile, 17 mm

Applications

Designed for fire-rated single-leaf doors in commercial, institutional, or public buildings, especially where narrow-profile aluminum frames are used. Suitable for new or retrofit projects demanding EN 1634 compliance, high cycle durability, and high anti-burglary protection. Often applied in offices, hotels, hospitals, public sector facilities, and OEM aluminum door fabrication.

Packaging & Shipping

Standard export packaging. Each unit includes lock body, stainless steel faceplate, mounting screws, and installation instructions.