This bathroom/toilet lock works on the basis of magnetism. When closing the door, magnets pull the latch bolt out, locking the door. The door is simply opened with the door handle, but when it is open, the latch bolt no longer extends. Unique to this lock is the patented blocking mechanism which makes the deadbolt unnecessary. This not only ensures a smooth finish, you also prevent damage to the frame or that you unexpectedly get stuck behind it. In the bathroom/toilet lock the latch bolt is blocked, so a deadbolt is not needed. This lock has a WC size of 63/8 mm and the backset is 50 mm. It is delivered including locking plate and a black front plate with a dimension of 174 x 20 mm (hxw).