NEMEF 1739/46 Anti-Panic Lock Function D Universal Grade 6 for Fire Doors 200kg+

Product Overview

The NEMEF 1739/46 72/65/24/9 is an anti-panic lock designed for use in fire-rated and smoke-control door assemblies, provided these assemblies have received a positive conformity assessment. Commonly deployed in high-traffic public buildings, the lock supports door leaf weights above 200 kg and has passed 200,000 test cycles with a 25N latch load. It offers very high anti-corrosion performance and is rated at the highest security grade 6 (on a 1?7 scale), making it suitable for demanding environments where damage resistance is required.

A distinguishing feature of this model is its universal panic function D (split follower), which allows escape via lever or handle from inside at all times and a selective engagement of the exterior handle based on lock status. This eliminates the risk of blocked egress while providing facility managers control over outside access. Recommended for specification in public infrastructure, educational, and healthcare facilities where robust anti-panic operation and top-tier security are required.

Key Features

• Anti-panic function D ? ensures exit is always possible from inside by lever or handle regardless of cylinder position


• Security grade 6 ? rated at very high protection level on a 1?7 scale for increased safety


• Cycle tested ? withstood 200,000 cycles under 25N latch load, supporting longevity in high-traffic areas


• For doors over 200 kg ? suitable for heavy door assemblies, as required in public and institutional buildings


• Very high corrosion resistance ? designed to perform in environments exposed to moisture or chemical cleaning


• Selective exterior access ? outside handle engagement changes with lock status for managed entry and security


• Suitable for fire and smoke doors ? eligible with positive test assessment

Technical Specifications

• Lock Type: Anti-panic, type D (split follower)


• Test Cycles: 200,000 cycles at 25N latch force


• Max Door Weight: over 200 kg


• Max Closing Force: 50N


• Security Rating: Grade 6 (scale 1?7)


• Application: Fire-rated and smoke-control doors (with positive assessment)


• Corrosion Resistance: Very high

Applications

Used in public buildings such as schools, hospitals, government offices, and other facilities with high door usage where strict safety and security standards are required. Suitable for fire-rated and smoke-control doors that have passed the relevant conformity tests. Appropriate for heavy doors over 200 kg, especially in locations subject to frequent or rough operation, such as emergency exits.

Packaging & Shipping

Standard export packaging. Unit includes lock body with panic function, installation hardware, and user/installation instructions.