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Locks For Doors and Flaps This deadlock with a keyless hook increases the strength and security of locks for sliding storefront aluminum doors. Its compact design makes it simple to install, and the manufacturer offers an unbeatable mechanical guarantee for the life of the product. You'll need to determine the'stile ' of your door before you can install a hook-bolt lock. This is the distance from the edge of the door to the top of any glass, panels or embedded