Gerda PRO System WKM4 Euro Profile Cylinder Class D Drill Resistant EN 1303 Nickel

Product Overview

The Gerda PRO System (WKM4) 55g/30 nickel cylinder is an anti-burglary euro profile lock cylinder, designed for compatibility with mortise locks in high-security doors. It is certified to PN-EN 1303:2015-07 (classification: 1 6 0 B 0 C 6 D) by the Institute of Precision Mechanics in Warsaw, ensuring compliance for fire-rated and smoke-control doors in residential and commercial environments.

A distinguishing feature of this model is its class D drill resistance, which offers a minimum of 5/10 minutes protection against drilling and mechanical attacks. This level of security is important for B2B buyers requiring certified intrusion resistance on access points subject to aggressive entry attempts. The WKM4 cylinder is therefore ideal for bulk procurement and installation in hotel, office, and apartment building projects demanding highest anti-burglary standards and compliance.

Key Features

• Class D drill resistance ? provides 5/10 minutes protection against mechanical and drilling attacks


• PN-EN 1303:2015-07 certification ? meets stringent European standards for lock cylinders


• Over 2,700,000 key code combinations ? reduces risk of key duplication in large volume installations


• High corrosion and temperature resistance ? operates reliably from -20°C to +80°C


• Fire and smoke door compatible ? approved for installation in fire-rated and smoke-proof doors


• Six tumbler mechanism ? ensures mechanical durability for more than 100,000 cycles


• Anti-bumping and anti-pick security ? includes additional upper pins and hardened anti-drill plate

Technical Specifications

• Type: Euro profile lock cylinder


• Finish: Nickel, satin


• Cylinder Length: 55g/30 mm


• Key Combinations: Over 2,700,000


• Number of Tumblers: 6


• Drill Resistance Class: D


• Mechanical Durability: >100,000 cycles


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


• Certification: PN-EN 1303:2015-07


• Fire Door Compatibility: Yes


• Smoke-Control Door Compatibility: Yes


• Issued Certificate: KT/402/IMP/2014


• Anti-bumping Protection: Yes


• Anti-drill Protection: Yes

Applications

Used for securing residential, commercial, and institutional buildings where high anti-burglary protection is required. Compatible with fire-rated and smoke-control doors per certification, suitable for hotel rooms, office suites, apartment blocks, and public sector facilities. Recommended for projects requiring certified lock cylinders in bulk, OEM or retrofit scenarios.

Packaging & Shipping

Each cylinder is shipped in an individually sealed box with 5 drilled keys, key code card, fixing screw, and installation instructions. Tamper-evident packaging ensures product integrity for B2B buyers. Bulk pallet shipping available for large orders.