housing magnet net cylindrical day and night lock 55 mm, rounded face This lock works on the basis of magnetism. When closing the door, magnets pull the latch bolt, locking the door. The door is opened as normal with the door handle, but when open, the latch bolt no longer protrudes. This does not only ensure a smooth finish, you also prevent damage to the frame or that you unexpectedly get stuck behind it. In addition, a magnetic lock ensures the silent closing of the door. The backset of this lock is 50 mm and comes with a locking plate and stainless steel faceplate.