https://click4r.com/posts/g/18....413024/a-handbook-fo
Types of Deadlocks for Doors Hook bolt deadlocks are used on sliding narrow stile aluminum storefront doors to enhance security and strength of locks. The locks are locked on both sides to allow greater flexibility in access control. To accurately measure a new lock, first determine the door's case thickness (or backset). This is the distance from the edge of the door to the centre of the latch hole. Tubular Latch The tubular latch is by far the most sought-after door latch. It is easy to install and is