Gerda PRO System WKM4 Euro Cylinder 35/35 Class 6D Anti-Drill Nickel Satin

Product Overview

The Gerda PRO System (WKM4) 35/35 is a double-sided anti-burglary euro profile cylinder, primarily utilized in residential and commercial security doors. Featuring class 6D burglary resistance as certified by the Instytut Mechaniki Precyzyjnej under PN-EN 1303:2015-07, it is suitable for installation in both fire-rated and smoke-proof doors across high-security environments.

Its main differentiation is the combination of class D anti-drilling and advanced anti-bumping protection, including specially hardened steel plates and code pins, which meet stringent mechanical security requirements. This level of security reduces procurement risk for facilities managers and locksmiths tasked with meeting regulatory compliance on public and commercial projects. The product is particularly recommended for bulk installation in fire-rated doors and in environments demanding the highest certified burglary resistance.

Key Features

• Class 6D anti-burglary ? certified under PN-EN 1303:2015-07 for top security applications


• Anti-bumping system ? integrated code pins prevent unauthorized bump-key attacks


• Anti-drill protection ? hardened steel plate and pins resist drilling for up to 10 minutes (class D)


• Over 2,700,000 key differs ? high combinatorial security limits unauthorized duplication


• Durability ? exceeds 100,000 opening cycles for long-term commercial use


• Operating temperature -20°C to +80°C ? functions reliably in demanding thermal environments


• Complies with fire and smoke door regulations ? approved for use in certified door assemblies

Technical Specifications

• Cylinder Length: 35/35 mm


• Type: Double-sided euro profile


• Key Combination Variants: >2,700,000


• Lock Mechanism: 6 tumbler system


• Endurance: >100,000 cycles


• Burglary Resistance Class: 6D


• Mechanical Attack Resistance: Class D


• Fire Door Compatibility: Yes


• Certification: PN-EN 1303:2015-07


• Certification: KT/402/IMP/2014


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


• Finish: Nickel satin


• Included Keys: 5 drilling keys

Applications

This cylinder is used in private and public buildings, such as offices, apartments, hotels, and institutional facilities where high resistance to burglary is required. Designed specifically for fire-rated and smoke-proof doors, it fulfills strict European certification standards for secure entrances. Well-suited for bulk procurement by security door manufacturers, professional installers, and B2B maintenance contractors.

Packaging & Shipping

Each unit is delivered in a sealed tamper-proof box, including 5 drilled keys, a code card, installation screw, and documentation. Packaging guarantees security and integrity for direct-to-site or warehouse distribution.