Gerda High Quality Surface Mounted Door Lock Deadlock Home Office Shop 4 Keys ZXZ

Surface mounted lock with two thick locking bars.
- Over one million sold worldwide

- Gerda Locks are certified to BS EN 12209:2005
- Classification Number: 3 C 1 0 0 C 7 E A 0 H

- Digit 1: Category of use: Grade (3)
High frequency of use by public or others with little incentive to exercise care and with a high chance of misuse, e.g. public doors
- Digit 2: Durability: Grade (C) 200 000 cycle tests, without load of ratchets
- Digit 3: Door mass and closing force: Grade (1) Maximum closing force for 100kg door - 50N
- Digit 4: Fire resistance: Grade (0) no admission to fire protection doors
- Digit 5: Safety: Grade (0) o requirements on safety
- Digit 6: Corrosion resistance: Grade (C) undetermined corrosion resistance, no temperature requirements
- Digit 7: Security and drill resistance: Grade (7)
Seventh highest grade is identified with requirements relating to physical attack, with or without drilling of the lockcase
- Digit 8: Field of door application: Grade (E) surface, hinged doors
- Digit 9: Type of key operation and locking: Grade (A) Cylinder lock or latch; manually locking
- Digit 10: Type of spindle operation: Grade (0) Lock without follower
- Digit 11: Type of spindle operation: Grade (H)
Ninth highest grade is relating to the number of differs and levers, at least 8 valves, expanding the number of combinations


- Fitting instruction in English, Russian and Polish
- Number of keys: 4
- Gerda Video: https://www.youtube.com/watch?v=iSVGRoIEbSw
- Deadlocking feature:
It is additional security feature preventing opening the door from inside.
Lock works as normal with one turn, it can be open with the knob or key.
When turning the lock with the key for the second time it works like dead lock, it blocks the knob and prevents from opening the lock from inside.
The lock is recommend for the single occupant flats and houses where is another escape route.


- We are the main Gerda distributor in the UK
- Please visit our shop for more Gerda Locks and Padlocks

- For many years invincible by burglars, TYTAN ZX, ZX Plus, ZXZ, ZK, Z2 and G1000 locks set the highest standard in safety