The B grade mortise lock cylinder has one of the highest securities against drilling, prying and picking. The key cylinder itself is replaceable and this provides convenience to the user.

Every Janus Safety Door comes with 2 types of keys, that is 2 “Contractor Keys” (Temporary) and 6 “Master Keys”. During the renovation process, “Contractor Keys” are used as temporary keys. It can be reset such that only 6 of “Master Keys” can be use to lock the door once the renovation is completed to ensure the key security.