Gerda PRO System X (WKM4) 40/40 satin nickel cylinder, class 6 D, box

GERDA Pro System X Anti-Snap Cylinder ? Unparalleled Door Security

The Gerda Pro System X anti-snap cylinder is a superior door lock security system. 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, complying with PN-EN 1303:2015-07 and 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, brass, and versions with a knob, thumb turn (WKM4), and a gear (WKM4Z).

• Cylinder classification according to PN-EN 1303: 2015-07: 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


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


• Attack resistance: Class D ? highest (5/10 min. drill resistance, resistance to mechanical attack)


• Recommended for fire-resistant doors


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


• Anti-picking protection (two additional upper latches)


• Anti-bumping pins to prevent unauthorized opening via bumping methods


• Additional anti-snap bar


• New double-diameter pins


• Includes 5 drilled keys, a code card, screw, and elegant packaging.

How to choose the right cylinder size?

Watch the video below.

Valued Customers, Please Choose Carefully

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

Due to the nature of the product, we cannot accept returns of opened or damaged packaging, as we cannot re-introduce such products back into our sales inventory.

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

Thank you for your understanding. Explore our product range today!