Metal, non-mechanical locks and security devices, namely, keys, locks, deadlocks, door locks, mortise locks, latches, deadlatches, mortise deadlatches, latch and key-operated deadlocks, cremone sets comprised of a key-operated deadlock, deadbolt, head and foot bolts and metal case and cover for three-point or five-point deadlocking of single or paired doors, track sets for lever-handled locks, all made of metal; door hardware, namely, [ door pulls, hinges, ] cover plates, bolts, head and foot bolts, track hangers, [ locking tongues, escutcheons, cylinder shields, ] all made of metal; [ doors in the nature of access panels, non-electric keeper switch levers for indicating that a lock bolt is in the locked or unlocked position,] gate locks, non-electric [ manual sliding and swinging ] gate openers and closers, all made of metal; sliding door locking devices comprised of a metal housing and cover, vertical lock column, door receiver, door hanger, door guide, guide angle and mechanical control cabinet, all made of metal; [ swinging door locking device comprised of ] a metal housing and cover, vertical lock column, door receiver, [ door hanger, door guide, guide angle and mechanical control cabinet, all of metal; hooks clothes hooks, all made of metal; non-electric speaking and observation port used in speaking to and observing persons through doors and partitions ] for use in prisons, jails, detention centers and other high security facilities; mountings for locks, all of metal; metal housings for locks and security devices; [ replacement and structural parts therefordoors in the nature of access panels ]