Construction elements made of metal, namely, metal struts, metal strut channel frames, metal strut framing systems comprised primarily of metal channels, metalchannel screws, brackets of metal for building, metal clamps, metal inserts andfittings being structural components ofmetal framing systems, metal channel nuts, rod couplers, lock washers, bolts, threaded metal rods, channel end caps, metal pipe fittings, metal pipe collars, metal pipe connectors, metal strut channel and framing accesso...