Gerda PRO System X cylinder insert (WKM4) 30g/30 brass knob, class 6 D, box

GERDA Pro System X Anti-Burglary Cylinder ? Unrivaled Door Security

The GERDA Pro System X anti-burglary cylinder is a high-security lock cylinder designed for mortise locks, offering superior protection against intruders. This anti-bumping and anti-drilling cylinder safeguards your home with advanced security features. The GERDA cylinder has been rigorously tested by the Institute of Precision Mechanics in Warsaw, meeting the PN-EN 1303:2015-07 standard and achieving a classification of 1 6 0 B 0 C 6 D. This GERDA Pro System X cylinder is approved for use in fire-rated and smoke-tight doors. GERDA Pro System X cylinders are available in Satin Nickel and Brass finishes, and with knob, thumbturn (WKM4), and gear (WKM4Z) options.

• Cylinder classification according to PN-EN 1303:2015-07: 1 6 0 B 0 C 6 D


• Certified by the Institute of Precision Mechanics


• Exceptional mechanism durability ? 6 pins, over 100,000 cycles


• Over 2,700,000 key code combinations


• Highest security class ? 6


• Highest burglary resistance ? Class C (High) according to KT/402/IMP/2014


• Superior corrosion and temperature resistance -20/+80 degrees Celsius ? Class C (Highest)


• Resistance to attack: Class D ? Highest (5/10 min. drill resistance, high resistance to mechanical attack)


• Recommended for fire doors


• Anti-drilling protection (internal cylinder protected by a hardened steel plate)


• Anti-picking protection (two additional upper latches)


• Anti-bumping pins to prevent unauthorized entry via bumping techniques


• Additional anti-burglary bar


• New double-diameter pins


• Includes 5 high-security keys, coding card, screw, and elegant packaging.

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Valued Customers, Please Choose Carefully

We are committed to your satisfaction and the highest security standards. All our certified cylinder locks are packaged in sealed boxes, guaranteeing their pristine condition and full functionality.

Due to the nature of this product, we regret that we cannot accept returns of opened or damaged packaging as we cannot resell such items.

Please carefully review the technical specifications and precisely measure your door before purchasing. If you have any questions or concerns, our team is here to assist you in choosing the right product.

Thank you for your understanding and we invite you to explore our full range of products.