Gerda PRO System X WKM4 Cylinder 35/50 Nickel Satin Class 6D Anti-Drill PN-EN 1303

Product Overview

The Gerda PRO System X (WKM4) 35/50 nickel satin cylinder is a high-security anti-burglary insert for mortise locks, certified to PN-EN 1303:2015-07 by the Institute of Precision Mechanics in Warsaw. It achieves classification 1 6 0 B 0 C 6 D, denoting exceptional durability, resistance to forced entry, and compatibility with fire-rated and smoke-control doors. Commonly specified for residential and commercial environments requiring advanced door protection, it operates reliably from -20°C to +80°C.

What distinguishes this SKU is its certified highest security level (class 6, class C resistance, class D anti-drilling), paired with comprehensive anti-manipulation features including anti-bumping elements, hardened steel plates, and dual upper pins. This combination eliminates procurement risks for high-security projects requiring proven mechanical resilience and verified certification, such as bulk installation in apartment complexes, office buildings, and fire-rated door assemblies.

Key Features

• PN-EN 1303:2015-07 certified ? achieves classification 1 6 0 B 0 C 6 D for mechanical security and durability


• Anti-bumping and anti-drill protection ? internal hardened steel plate and special pins deter forced entry


• 2,700,000 key combinations ? high coding complexity enhances keyed security for buildings


• Fire-rated and smoke-control door approval ? compliant for use in fire safety doors


• Operating temperature -20°C to +80°C ? suitable for heated and unheated spaces


• Durability over 100,000 cycles ? maintains function in high-traffic commercial settings


• Includes 5 drilled keys, code card, mounting screw, and decorative packaging ? meets bulk procurement requirements

Technical Specifications

• Length: 35/50 mm


• Finish: Nickel satin


• Classification: 1 6 0 B 0 C 6 D


• Certification: PN-EN 1303:2015-07


• Certification: KT/402/IMP/2014


• Number of Tumblers: 6


• Key Combinations: 2,700,000+


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


• Cycle Durability: >100,000 cycles


• Fire-rated Door Approval: Yes


• Smoke-control Door Approval: Yes


• Anti-drill Pins: Yes


• Anti-bump Pins: Yes


• Packaging: Boxed with security seal

Applications

Designed for installation in mortise locks on residential, multi-family, and commercial doors, especially where high-security, fire-rated, or smoke-control requirements are mandated. Common in bulk installations for apartment complexes, office buildings, schools, and hotels. Approved for barrier doors and assemblies requiring mechanical certification and durable, anti-burglary protection.

Packaging & Shipping

Each unit is delivered in a security-sealed box including the cylinder, 5 drilled keys, code card, mounting screw, and installation instructions. Tamper-resistant packaging ensures suitability for bulk procurement and distribution.