Gerda PRO System X WKM4 Cylinder Lock Satin Nickel Class 6 D Knob Anti-Drilling Fire Rated

Product Overview

The Gerda PRO System X (WKM4) cylinder lock, finished in satin nickel and equipped with a knob, provides high-security protection for doors in residential and commercial environments. Rated to PN-EN 1303:2015-07 with certifications from the Institute of Precision Mechanics, it achieves classification 1 6 0 B 0 C 6 D, including class 6 for security, class C for corrosion and temperature resistance, and class D for anti-drilling and attack protection. Approved for installation in fire-rated and smoke-control doors, its performance is verified through rigorous Polish and EU standards.

What distinguishes the WKM4 variant is its combination of a knob (gałka) and advanced anti-bumping and anti-drilling technologies, backed by highest durability?over 100,000 cycles and 2,700,000 key code combinations. For facility managers or OEM specifiers seeking to minimize procurement risk and ensure compliance with fire safety regulations or secure access, this SKU is particularly suited for bulk deployment in institutional and commercial projects where certified anti-burglary hardware is required.

Key Features

• PN-EN 1303:2015-07 certified ? tested by Instytut Mechaniki Precyzyjnej for classification 1 6 0 B 0 C 6 D


• Anti-bumping and anti-drilling protection ? hardened steel plates and pins block forced entry techniques


• Class D attack resistance ? withstands 5/10 minutes of drilling and mechanical attacks for high-security installations


• Fire and smoke door approval ? meets requirements for use on fire-rated and smoke-control doors


• Over 2,700,000 key code combinations ? minimizes risk of unauthorized duplication


• Knob version (gałka) ? provides convenient access control and user-friendly operation


• Corrosion and temperature resistance ? operates reliably from -20°C to +80°C, suitable for harsh environments

Technical Specifications

• Type: Cylinder lock (WKM4)


• Finish: Nickel satin


• Security Classification: Class 6 D (PN-EN 1303)


• Lock Certification: KT/402/IMP/2014 (Class C)


• Cycle Durability: >100,000 cycles


• Key Combinations: >2,700,000


• Temperature Range: -20°C to +80°C


• Fire Door Approval: Yes


• Smoke Door Approval: Yes


• Anti-bumping Protection: Yes


• Anti-drilling Protection: Yes


• Number of Pins: 6


• Included Keys: 5 drilled keys


• Packaging: Box with security seal

Applications

Widely used for securing residential, commercial, institutional, and public sector doors that require high protection against burglary. Compatible with fire-rated and smoke-control doors in apartments, office buildings, schools, healthcare facilities, and OEM production. Particularly appropriate for facilities requiring advanced anti-burglary hardware and compliance with safety certifications.

Packaging & Shipping

Each unit is supplied in a sealed, tamper-evident box with 5 drilled keys, code card, fixing screw, and installation manual. The secure packaging ensures full product functionality and compliance for certified projects. Bulk shipping options available upon request.