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Types of Deadlocks for Doors Deadlocks with hook bolts are used on aluminum sliding narrow stile storefront doors to maximize security and strength of locks. These locks have keys on both sides that allow for greater flexibility. To accurately measure a new lock to your door, you need to first determine the case's depth (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 the most sought-after door
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