Gerda PRO System X (WKM4Z) lock cylinder 30/40 gear, nickel, class 6 D, box

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

The Gerda Pro System X anti-burglary cylinder is a superior door lock security solution. This anti-bumping and anti-drilling cylinder provides exceptional protection against intruders, safeguarding your home. The GERDA cylinder has been tested by the Institute of Precision Mechanics in Warsaw according to the PN-EN 1303:2015-07 standard, achieving a classification of 1 6 0 B 0 C 6 D. The GERDA Pro System X cylinder is approved for use in fire and smoke-resistant doors. GERDA Pro System X door cylinders are available in satin nickel and brass finishes, and also in versions with a knob, a thumb turn (WKM4), and a gear (WKM4Z).

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


• Certificate issued 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


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


• Resistance to attack: Class D ? highest (5/10 min. drilling resistance, 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-picking pins to prevent unwanted opening by bumping


• Additional anti-burglary bar


• New double-diameter pins


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

How to choose the right cylinder size?

Watch the video below.

Valued Customers, Please Choose Wisely

We are committed to your satisfaction and the highest safety standards. Therefore, all our certified cylinders are packaged in sealed boxes, guaranteeing their integrity and full functionality.

Due to the nature of the product, 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 available to assist you in choosing the right product.

Thank you for your understanding. We invite you to explore our product range.