Gerda PRO System WKM4 Cylinder Lock 30/35 Brass EN 1303 Class 6D Anti-Drill

Product Overview

The Gerda PRO System Cylinder Lock (WKM4) 30/35 Brass is a high-security anti-burglary profile cylinder designed for use in commercial, residential, and public sector doors, including fire-rated and smoke-control applications. Certified to PN-EN 1303:2015-07 with the highest security and durability classifications, it has been tested and approved by the Precision Mechanics Institute in Warsaw.

Its hallmark feature is the exceptionally high resilience against mechanical attacks and drilling (Class D), with 5-10 minutes resistance, reducing risk for facility managers and OEM buyers specifying locks for high-security projects. This product is optimal for large-scale procurement for new builds and refurbishments in facilities requiring certified security hardware, such as hotels, offices, and multi-family dwellings.

Key Features

• Certified to PN-EN 1303:2015-07 ? meets European standards for security and durability


• 6 lever mechanism ? tested for over 100,000 operating cycles for long service life


• Anti-drill steel plate ? internal cylinder protected with hardened plate for attack resistance


• 2,700,000+ key code combinations ? ensures low risk for unauthorized key duplication


• Class D attack resistance ? resists drilling and mechanical attacks for 5?10 minutes


• Operating temperature range -20°C to +80°C ? suitable for harsh environments


• Includes 5 dimple keys, security code card, fixing screw, and attractive packaging ?

Technical Specifications

• Cylinder Size: 30/35 mm


• Material: Brass


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


• Certification: Precision Mechanics Institute Warsaw


• Security Class: 6


• Attack Resistance: D (5/10 min drilling/mechanical resistance)


• Corrosion/Temperature Resistance: Class C


• Key Combinations: Over 2,700,000


• Lever Mechanism: 6 levers


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


• Finish: Brass


• Included: 5 drilled dimple keys, code card, screw

Applications

Used in high-security commercial, residential, and institutional buildings for entrance doors, fire-rated doors, and smoke-control doors. Suitable for OEM projects, bulk installation in hotels, offices, apartment blocks, and facilities requiring certified anti-burglary locking solutions. Approved for fire protection and smoke-control applications.

Packaging & Shipping

Packaged in a sealed export box including cylinder, 5 drilled dimple keys, code card, mounting screw, and instruction manual. Security packaging ensures product integrity for bulk shipments and OEM deliveries.