distributorship and retail store services in the fields of building materials, hardware, lumber, construction materials, [ plumbing, HVAC, electrical and lighting supplies, home furnishings, ] tools, fasteners, [ floor coverings, roofing, ] gypsum, insulation, doors, windows, moldings and trim, [ rebar and mesh, lawn and garden supplies, steel framing materials, pipe and fittings, appliances, house plans, ] engineered wood products, namely, i-joists, joists, beams, and headers and prefabricated wood products, namely, roof trusses, roof systems, wood floor trusses, wall panels, wall systems, floor systems, wood decks and stairways and stair parts