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Locks For Doors and Flaps This keyless hookbolt deadlock maximizes the strength and security of sliding narrow stile aluminium storefront doors. Its compact design makes it easy to install and comes with a the manufacturer's lifetime mechanical warranty. the manufacturer. You'll need to determine the'stile ' of your door before installing a hook-bolt lock. This is the distance from the edge of the door to the beginning of any panels, glass or embedded decorations. Hook-type latches, which have an attached bracket