Common metals and their alloys; Door springs of metal, non-electric; Foot-operated door openers of metal; Gate handles of metal; Hinge pin door closers of metal; Manually operated metal valves; Metal door hardware, namely, keys and key cylinders; Metal door hardware, namely, non-powered door actuators; Metal doorknobs; Metal safety doors; Metal security lock cylinders; Self-closing hinges of metal; Spring-loaded door closers of metal; Spring hinges of metal