Architectural elements, namely, non-metal friezes; Bicycle storage racks, not of metal; Downspouts not of metal; Drain pipes, not of metal; Ducts, not of metal, for ventilating and air-conditioning installations; Gutter pipes, not of metal; Non-metal down spouts; Non-metal gutter pipes; Non-metallic drainage pipes; Nonmetal tubular liners for the lining of sewer systems; Plastic conduit for drainage; Plastic conduit for drainage and irrigation; Plastic conduit for irrigation; Plastic oil and debris trap for storm drainage; Plastic road studs for marking out roads; Plastic water conduits for roofs; Rain gutters, not of metal; Road signs, non-luminous and non-mechanical, not of metal; Storm water management devices, namely, non-metal catchment basins and non-metal detention basins in the nature of cisterns; Water treatment equipment, namely, non-metal water storage basins for collecting and storing water