Metal building materials, namely, profiled metal sheets, metal roofing, metal roofing panels, metal roof flashing, metal roof trusses, metal roof gutters, sheet metal, metal components of roofing systems, namely, purlins, battens, beads, gutters, eaves, spouting, snow guards and rails; metal rainwater collection systems, namely, metal roof feed through, and metal connecting pipes; ironmongery, namely, ladders, snow guards in the nature of metal guard rails, prefabricated metal bridges and roo...