Rigid metallic construction channels and combinations for use as struts and in metal framing systems; Building and framing accessory and installation components all made of metal, namely, nuts, bolts, screws, washers for use as hardware, studs, hinges, springs for use as hardware, spring clips for use as hardware, pipe couplings, pipe clamps, pipe rollers for use as hardware, pipe hangers, fender hooks for use as hardware, conveyor and trolley rollers for use as hardware, clamps, brackets for use as hardware, tubing clips, and conduit and pipe risers; strut-type structural building and framing products, namely, rolled and extruded continuous slot metal channels; sectional metallic building units and couplings, fittings, and connections therefor, adapted to serve as framing and supporting members for temporary and permanent construction of buildings and other structures; metal electrical and electronic installation products and accessory components, namely, cable trays and supports, conduits, bus duct and bus bar supports, cable saddles and supports, bus bar clamps, bus duct connectors, and wiring stud nuts; fluorescent fixture fittings and supports in the nature of adjustable framing members, namely, metal mounting brackets for mounting fluorescent lighting fixtures; Sectional metallic building units and couplings, fittings, and connections therefor, adapted to serve as framing and supporting members for temporary and permanent construction of buildings and other structures, including racks, scaffolding, ladders, rails, supports and the like; Metal fasteners, namely, bolts, nuts, washers, anchors, threaded rods, nails, rivets, screws

Structural building and framing products, and accessory components therefor-namely, rolled and extruded metal sections, trolley and conveyor assemblies and parts, end caps and closure strips for channel and tubing members, shelf brackets, beam clamps, concrete inserts, partition and display fittings and mouldings, ducts, and door jambs