Extra cylindrical lock for the armoured type of steel doors, locked by 3 key turns. Cylinder has a working key and 5 original keys, which are sealed in the factory. Working key is used to install a door lock and to operate the door during building, end user gets original keys, so as to ensure maximum security. The key is made of nickel and silver alloys. Blank of the key is patented, extra keys are ordered at an authorized representative upon submission of a card. Cylinder is protected by hardened steel from breaking and drilling.
Recommended cylinder sizes 35×45, 30×40. The lock under UNI: ENV 12209:2005 standard meets the 3rd class and the ISO 9001 quality management certificate.