Other Construction Material Merchant Wholesalers This industry comprises (1) establishments primarily engaged in the merchant wholesale distribution of manufactured homes (i.e., mobile homes) and/or prefabricated buildings and (2) establishments primarily engaged in the merchant wholesale distribution of construction materials (except lumber, plywood, millwork, wood panels, brick, stone, roofing, siding, electrical and wiring supplies, and insulation materials). Fencing and fencing accessories (except wood) merchant wholesalers Flat glass merchant wholesalers Ornamental ironwork merchant wholesalers Plate glass merchant wholesalers Prefabricated buildings (except wood) merchant wholesalers Storage bins merchant wholesalers