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Locks For Doors and Flaps This keyless hook bolt deadlock enhances security and strength of the lock for sliding storefront aluminum doors. Its compact design is simple to install and comes with a an unbeatable mechanical warranty from the manufacturer. To install hook bolt locks on your door, you must measure the'stile'. This is the distance from the edge of the door to the top of any glass panels or embedded decorations. Hook-type latches with a hook and bracket Locks for doors and flaps must be robust e