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

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

The GERDA Pro System X anti-burglary cylinder is a complementary security solution for mortise locks, providing superior protection against intruders. This anti-bumping and anti-drilling cylinder safeguards your home with exceptional reliability. The GERDA cylinder has been rigorously tested by the Institute of Precision Mechanics in Warsaw, complying with PN-EN 1303:2015-07 standards 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 and brass finishes, and also with a knob, thumb turn (WKM4), and 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


• Unmatched mechanism durability ? 6 wards, exceeding 100,000 cycles


• Over 2,700,000 key code combinations


• Highest security class ? 6


• Maximum 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, resistance to mechanical attack)


• Recommended for fire-resistant 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 via bumping


• Additional anti-burglary bar


• New double-diameter pins


• Includes 5 high-security keys, a code card, screw, and attractive 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 safety standards. Therefore, all our certified cylinders are packaged in sealed boxes to guarantee their undamaged 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 to the market.

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

Thank you for your understanding and we invite you to explore our offerings.