Gerda PRO System WKM4 Cylinder Lock 35g/50 with Knob Nickel PN-EN 1303 Class 6D

Product Overview

The Gerda PRO System (WKM4) 35g/50 cylinder lock with knob, finished in nickel, provides advanced anti-burglary protection for mortise locks and complies with PN-EN 1303:2015-07, class 6D, as certified by the Institute of Precision Mechanics in Warsaw. This high-security cylinder is designed for use in residential and commercial doors where resistance to forced entry and fire protection are critical, including fire-rated and smoke-control doors.

Its certification to PN-EN 1303 class 6D distinguishes this SKU by delivering the highest mechanical durability and intrusion resistance tested in the market, including 5?10 minute drill resistance and anti-bumping features. This addresses procurement risks for facility managers needing compliance with fire safety and insurance requirements. The product is particularly suited for bulk installation in apartment blocks, offices, or public buildings demanding certified high-security door cylinders.

Key Features

• PN-EN 1303:2015-07 class 6D ? certified for top security and durability requirements


• Anti-bumping and anti-drill protection ? internal hardened steel plate and special pins block manipulation


• Mechanical endurance ? rated for over 100,000 cycles with 6 tumblers


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


• Fire and smoke door approved ? suitable for installation in certified doors


• Corrosion and temperature resistance ? operates from -20°C to +80°C, class C highest rating


• Complete set ? includes 5 dimple keys, code card, fixing screw, and aesthetic packaging

Technical Specifications

• Cylinder Length: 35g/50 mm


• Finish: Nickel


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


• Certification: Institute of Precision Mechanics (IMP), Warsaw


• Security Class: 6


• Attack Resistance: Class D (5?10 min drill and mechanical attack)


• Fire Door Approval: Yes


• Smoke Door Approval: Yes


• Number of Tumblers: 6


• Key Combinations: >2,700,000


• Mechanical Cycles: >100,000


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


• Corrosion Resistance: Class C


• Included Keys: 5 dimple keys


• Accessories: Key code card, fixing screw

Applications

Commonly installed in residential, commercial, and public-sector doors requiring high security, especially those specified as fire-rated or smoke-control. Suitable for new construction or renovation of apartment complexes, offices, government buildings, schools, and hotels. Meets requirements for bulk procurement projects and insurance-driven upgrades of access control hardware.

Packaging & Shipping

Supplied in a sealed, tamper-evident box with 5 dimple keys, key code card, fixing screw, and installation instructions. Packaging ensures product integrity and is suitable for bulk shipment to OEM or facility management buyers.