Gerda PRO System WKM4 Cylinder Lock 30/45 Nickel Satin Anti-Drill Fire Door Certified

Product Overview

The Gerda PRO System (WKM4) 30/45 nickel satin cylinder lock is an anti-burglary insert used together with mortise locks for high-security protection. Certified by the Institute of Precision Mechanics in Warsaw, it is classified as 1 6 0 B 0 C 6 D under PN-EN 1303:2015-07, and approved for installation in fire-rated and smoke-control doors. Its corrosion and temperature resistance is rated to class C, functioning reliably between -20°C and +80°C.

The distinguishing feature of this specific SKU is its advanced anti-drill and anti-bump protection, including a hardened steel plate, two additional top pins, and anti-drill bars, which mitigate security risks for doors in sensitive settings. This makes the Gerda PRO System WKM4 particularly suited for bulk procurement in commercial, institutional, or multi-residential construction projects where certified, high-security hardware is required.

Key Features

• High key security ? over 2,700,000 unique key code combinations


• Mechanical durability ? exceeds 100,000 operating cycles per PN-EN 1303:2015-07 classification


• Anti-drill protection ? hardened steel plate and anti-drill pins in the cylinder core


• Approved for fire and smoke doors ? satisfies certification requirements for fire safety installations


• Anti-bump protection ? specialized pins prevent forced entry by bumping attack


• Corrosion and temperature resistance ? class C operation from -20°C to +80°C


• Set includes 5 drilled keys, code card, mounting screw, and tamper-evident packaging

Technical Specifications

• Cylinder Length: 30/45 mm


• Finish: Nickel satin


• Standard: PN-EN 1303:2015-07


• Classification: 1 6 0 B 0 C 6 D


• Certification: Institute of Precision Mechanics, Warsaw


• Fire Door Approved: Yes


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


• Mechanical Durability: >100,000 cycles


• Key Combinations: >2,700,000


• Number of Keys Included: 5


• Anti-drill Protection: Yes


• Anti-bump Protection: Yes


• Corrosion Resistance: Class C

Applications

Used in commercial, residential, and institutional buildings for doors requiring high burglary resistance and certified security. Compatible with fire-rated and smoke-control doors. Ideal for projects involving bulk installation of high-security cylinders, such as hotels, office complexes, public buildings, and multi-residential facilities.

Packaging & Shipping

Tamper-evident box packaging includes cylinder insert, five drilled keys, code card, mounting screw, and installation instructions. All units are factory sealed to ensure product integrity and full functionality.