GERDA PRO System 30/30 insert with knob, satin nickel, class 6 D, blister

GERDA Pro System Anti-Burglary Cylinder ? Uncompromising Door Security

The GERDA Pro System Anti-Burglary Cylinder is a high-security solution designed to seamlessly integrate with your mortise lock, providing superior protection against intruders. This anti-bumping and anti-drilling cylinder safeguards your home with unwavering reliability. The GERDA WKM4 Cylinder has been rigorously tested by the Institute of Precision Mechanics in Warsaw, meeting the requirements of PN-EN 1303:2015-07 and achieving a classification of 1 6 0 B 0 C 6 D. The GERDA Pro System cylinder is approved for use in fire-resistant and smoke-tight doors. GERDA Pro System cylinders are available in satin nickel and brass finishes, and with knob, thumb turn (WKM4), and gear (WKM4Z) options.

• 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 locking 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. drilling 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-picking pins to prevent unauthorized opening via bumping


• Additional anti-burglary locking bolt


• New double-diameter pins


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

How to choose the right cylinder size?

Watch the video below.

Valued Customers, Please Make Informed Purchases

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

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

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

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