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Locks For Doors and Flaps This deadlock with a keyless hook maximizes lock strength and security for sliding storefront aluminum doors. Its compact design makes it simple to install, and the manufacturer offers a lifetime guarantee on mechanical security. You'll need to determine the "stile" of your door before you install hook-bolt locks. This is the distance between the edge of the doors and the beginning of any glass, embedded decoration or panels. Hook-type latches that have a hook and bracket Locks for doors