Gerda PRO System X WKM4 Euro Profile Cylinder 30g/30 Brass Class D Anti-Drill Knob

Product Overview

The Gerda PRO System X (WKM4) 30g/30 brass cylinder with knob is an anti-burglary euro profile cylinder designed for use in mortise lock equipped doors. Commonly specified in residential and commercial building access points, it is certified to PN-EN 1303:2015-07 and tested by the Institute of Precision Mechanics in Warsaw, achieving the highest security classification: 1 6 0 B 0 C 6 D. This product is approved for fire-rated and smoke-control doors, with performance verified for corrosion resistance and operating temperatures from -20°C to +80°C.

The key differentiator of this SKU is its resistance to mechanical attacks, achieving class D ? the highest level ? which includes up to 10 minutes resistance against drilling and forced entry methods. This feature minimizes security risks for facility managers or contractors responsible for high-risk areas. Recommended for bulk procurement in fire protection installations, facility upgrades, or new commercial and high-security residential projects where compliance and verified anti-intrusion performance are critical.

Key Features

• Certified PN-EN 1303:2015-07 ? classification 1 6 0 B 0 C 6 D for security, durability, and corrosion resistance


• Class D attack resistance ? withstands up to 10 minutes against drilling and mechanical attacks


• Anti-bumping and anti-pick protection ? internal components prevent unauthorized entry methods


• Fire-rated and smoke-control approved ? permitted for use in certified fire doors


• Mechanism durability ? 6 pins, tested to over 100,000 cycles for long-term operation


• Over 2,700,000 key code combinations ? high security against key duplication


• Includes 5 drilled keys, code card, mounting screw, and aesthetic box packaging ?

Technical Specifications

• Cylinder Length: 30g/30 mm


• Material: Brass


• Finish: Brass


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


• Certificate: Institute of Precision Mechanics (IMP) Warsaw


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


• Pins: 6


• Key Combinations: >2,700,000


• Cycle Durability: >100,000 cycles


• Attack Resistance: Class D (mechanical and drilling, 5/10 min)


• Fire Door Approval: Yes


• Smoke Door Approval: Yes


• Anti-bumping Protection: Yes


• Anti-drilling Protection: Hardened steel insert


• Knob: Included


• Keys: 5 drilled keys included

Applications

Designed for installation in residential and commercial doors requiring high security, including fire-rated and smoke-control doors. Suitable for facility management upgrades, access control points, new construction, and retrofit projects in offices, multi-unit buildings, retail premises, and critical infrastructure. Meets requirements for certified security and fire protection assemblies.

Packaging & Shipping

Each cylinder is packaged in a sealed aesthetic box with 5 drilled keys, code card, mounting screw, and installation instructions. Tamper-evident packaging ensures product integrity. Bulk shipping options available for large orders.