Steel building materials, namely, prefabricated steel truss cassettes, steel rafters, steel beams; steel framing accessories, namely, steel framing studs; steel truss assemblies, namely, steel roof trusses and steel roofing brackets; steel roof assemblies comprised of steel roof trusses and steel roofing brackets; steel trusses, steel bridging, steel connectors for roofing and roofing joists and structural joint connectors of steel, and steel purlins

steel building materials, namely, prefabricated steel truss cassettes, steel rafters, steel beams, steel framing accessories, namely, steel framing studs, steel truss assemblies, namely, steel roof trusses and steel roofing brackets, steel roof assemblies comprised of steel roof trusses and steel roofing brackets, steel trusses, steel bridging, steel connectors for roofing and roofing joists and structural joint connectors of steel, and steel purlins