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Types of Deadlocks for Doors Hook bolt deadlocks can be used on narrow stile aluminum storefront sliding doors to enhance security and strength of the lock. The locks come with keys on both sides that allow for greater flexibility. To accurately determine the size of a new lock for your door, first determine its case depth (or backset). This is the distance between the edge of the front door and the center of the latch hole. Tubular Latch The tubular latch is the most popular type of door latch. It'
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