Door Cylinder Gerda PRO System (WKM4) 30/35 Brass, 6 D Class

Anti-burglary cylinder GERDA Pro System - high protection for every door
Anti-burglarycylinder GERDA Pro System is a door security device that works together with a mortise lock. An anti-burglary cylinder with anti-bumping and anti-drill protection perfectly protects our house from intruders. The GERDA WKM4 cylinder has been tested by the Institute of Precision Mechanics in Warsaw in accordance with the current standard PN-EN 1303:2015-07 obtaining the classification: 1 6 0 B 0 C 6 D. Product - GERDA Pro System insert approved for use in fire and smoke proof doors. Door inserts GERDA Pro System are available in colors: satin nickel, brass and in the version with a knob, driver(WKM4) and pinion(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


• highest durability of the mechanism - 6 pledges, more than 100,000 cycles


• more than 2,700,000 key code combinations


• highest security class- 6


• highest resistance to burglary- class C (high) according to KT/402/IMP/2014


• highest resistance to corrosion and temperature -20/+80 degrees Celsius- class C (highest)


• resistance to attack: class D - the highest (5/10 min. resistance to drilling, resistance to mechanical attack)


• recommended for fire doors


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


• anti-drill protection (additional two top latches)


• anti-drill needles against unwanted bumping opening


• additional anti-bump bar


• new two-diameter pins


• complete with 5 drilled keys, code card, screw, aesthetic packaging.

How to choose the right size of the cylinder?
Watch the video below.

Dear customers, please make thoughtful purchases
We care about your satisfaction with your purchases and high standards of security, so all certified lock cylinders are packed in sealed boxes, which guarantee their intact condition and full functionality.
Due to the nature of the product, we would like to inform you that we cannot accept the return of open or tampered packages, as we cannot put such products back on sale.
Please carefully check the technical specifications and accurately size the door before purchasing. If you have any questions or concerns, our team is at your disposal and will be happy to assist you in selecting the right product.
We thank you for your understanding and invite you to take a look at our offer.