Classification Information
Branching pipes, not of metal; Downspouts, not of metal; Drain pipes, not of metal; Non-metal air conditioning ducts; Non-metal down spouts; Non-metal heating ducts; Non-metal sewer pipes; Non-metal water pipes; Non-metallic rigid pipes for construction purposes; Plastic conduit for drainage; Plastic water conduits for balconies; Plastic water conduits for roofs; Rigid pipes, not of metal; Sewer pipes, not of metal; Water-pipe valves, not of metal or plastic
Nonmetallic Building Materials