Gerda PRO System WKM4 Euro Profile Cylinder 35/40 Satin Nickel Class 6D EN 1303

Product Overview

Used for high-security entrance doors, the Gerda PRO System (WKM4) 35/40 satin nickel cylinder provides enhanced burglary resistance and is suitable for residential and commercial applications. It has been certified by the Instytut Mechaniki Precyzyjnej to PN-EN 1303:2015-07, achieving the highest class 6 D classification for durability and anti-burglary protection. This cylinder is approved for installation in fire-rated and smoke-control doors, ensuring compliance with stringent safety requirements.

Its strongest differentiator is the 6 D classification, indicating maximum resistance to mechanical attack and drilling with a 5/10 minute test duration. For security-conscious procurement managers prioritizing access control reliability and physical asset protection, the WKM4 cylinder is particularly suited for bulk installation in apartment buildings, office complexes, and fire door assemblies where regulatory and anti-tamper certification are required.

Key Features

• Certified to PN-EN 1303:2015-07 ? 1 6 0 B 0 C 6 D classification delivers maximum burglary resistance


• Anti-bumping protection ? integrated pins and hardened steel elements thwart bump key attacks


• Drilling resistance ? steel plates and special design withstand 5/10 minute mechanical access attempts


• Fire and smoke door compatibility ? certified for use in fire-rated and smoke-control door assemblies


• Over 2,700,000 key code combinations ? high-security master keying for large access control systems


• Mechanical endurance ? rated for over 100,000 cycles with robust 6 tumbler mechanism


• Anti-pick security ? two additional upper pins and dual diameter bolts increase pick resistance

Technical Specifications

• Model: WKM4


• Length: 35/40 mm


• Finish: Satin nickel


• Classification: 1 6 0 B 0 C 6 D (PN-EN 1303:2015-07)


• Certification: Instytut Mechaniki Precyzyjnej


• Fire Door Compatibility: Approved


• Smoke-Control Door Compatibility: Approved


• Resistance to drilling: 5/10 min test duration


• Operating Temperature: -20°C to +80°C


• Key Combinations: Over 2,700,000


• Mechanical Endurance: Over 100,000 cycles


• Included Keys: 5 drilled keys

Applications

This cylinder lock is used in residential and commercial entrance doors, including apartment complexes, office buildings, and properties requiring certified fire and smoke door security. Well-suited for bulk procurement in multi-unit housing projects, facilities with strict access control, and OEM installations for fire-rated door manufacturers.

Packaging & Shipping

Each unit is supplied in a sealed, tamper-proof box containing the cylinder, five drilled keys, a security code card, a mounting screw, and installation instructions. Standard export packaging applies for larger orders.