Sliding Glass Showcase Lock APL2042KA A showcase lock that fits into a cut hole in a sliding glass display cabinet. Features: For use on small and large glass sliding doors. On large doors it creates better security as it is difficult to pull the doors apart due to the protrusion of the lock barrels inside the cabinet. Consists of an internal and external plate which is held together by two screws. A blocker or a bung with a pin protrusion that is inserted into the keyway to prevent any unauthorised access to the cabinet. A set of rubber spacing washers is supplied to make fitting easier.