https://squareblogs.net/roastw....ire02/youve-forgotte
https://zenwriting.net/jumboco....tton93/3-ways-the-ho
of Deadlocks for Doors Hook bolt deadlocks are installed on sliding narrow stile aluminum storefront doors to increase security and strength of locks. They have keys on both sides to allow for greater flexibility. To accurately measure for a new lock, you must first determine the door's depth (or backset). This is the distance between the edge of the front door and the center of the latch
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