Air-conditioning ducts, not of metal; Drain pipes, not of metal; Ducts, not of metal, for ventilating and air-conditioning installations; Fitted swimming pool covers; Gutter pipes, not of metal; Multilayer panels of plastic for use in building; Non-metal air-conditioning ducts; Non-metal air conditioning ducts; Non-metal architectural mouldings and finish trim; Non-metal decorative moldings and decorative trim for use in building construction; Non-metal gutter pipes; Non-metal HVAC ducts; Non-metal vent cover for HVAC ducts; Non-metal ventilating ducts; Non-metal water pipes; Non-metallic drainage pipes; Plastic conduit for drainage; Rigid pipes of polypropylene for the supply of drinking water and heating and air conditioning systems in houses, office buildings and industrial buildings; Rigid pipes, not of metal; Water-pipes, not of metal
Nonmetallic Building Materials