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Types of Deadlocks for Doors Hook bolt deadlocks can be used on storefronts with narrow stiles made of aluminum sliding doors to enhance security and strength of locks. These locks are double-keyed to give greater flexibility in access control. To accurately measure the new lock, first determine the door's depth (or backset). This is the distance between the edge of the front door and the centre of the latch hole. Tubular Latch The tubular latch is the most well-known type of do
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