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Locks For Doors and Flaps This deadlock with a keyless hook enhances security and strength of the lock for narrow stile aluminum storefront doors. Its compact design makes it simple to install and the manufacturer gives an unbeatable mechanical guarantee for the life of the product. You'll need to measure the'stile of your door' before installing hook-bolt locks. This is the distance from the edge of the door to the start of any glass panels or embedded decorations. Hook-type latches wi