The PAS3621 Yale Doormaster has croppable extensions that offer replacement for a wide range of multipoint locks with a maximum level of security. PAS3621 is the equivalent to BS3621 for motice locks and is recommended by the NHBC, Risc Authority and DHF. Meets requirements of PAS3621:2011, Secured by Design and PAS24. Supplied with pre-assembled keeps using the patented 'uni-packer' system for fast, easy and reliable installation. Rounded ends for safe installation. The BS version of the Doormaster features a stronger gearbox and hook with anti drill plates, stronger keeps and a thicker faceplate. Supplied with: x3 keeps and uni-packer system, fixing screws pack, x2 allen keys, split spindle. Latch reversal: Undo the screw in the latch to remove. Reverse, reinsert and replace screw. Nightlatch reversal: Automatically reverses.