19 Building materials (non-metallic); non-metallic rigid pipes for building; asphalt, pitch and bitumen; non-metallic transportable buildings; monuments, not of metal; aquaria structures; swimming pools structures, not of metal; bird baths structures, not of metal; gypsum; clay; gravel; aquarium gravel; doors, not of metal; folding doors, not of metal; chimney pots, not of metal; roof gutters, not of metal; street gutters, not of metal; works of stonemasonry; works of art of stone, concrete or marble; cabanas, not of metal; stone; framework, not of metal, for building; greenhouse frames, not of metal; cornices, not of metal; building cardboard asphalted; bricks; water-pipe valves, not of metal or plastic; drain traps valves, not of metal or plastic; posts, not of metal; chimney cowls, not of metal; buildings, not of metal; buildings, transportable, not of metal; roofing, not of metal; manhole covers, not of metal; building timber; manufactured timber; wood, semi-worked; building materials, not of metal; roof flashing, not of metal; coatings building materials; wall linings, not of metal, for building; windows, not of metal; greenhouses, transportable, not of metal; branching pipes, not of metal; tombs monuments, not of metal; wainscotting, not of metal; parquet flooring; partitions, not of metal; sand, except foundry sand; platforms, prefabricated, not of metal; floor tiles, not of metal; tiles, not of metal, for building; cladding, not of metal, for building; linings, not of metal, for building; coverings, not of metal, for building; surfacings, not of metal, for building; facings, not of metal, for building; mortar for building; building glass; plate glass windows, for building; insulating glass building; window glass, for building; window glass, except glass for vehicle windows; penstock pipes, not of metal; water-pipes, not of metal; gutter pipes, not of metal; ducts, not of metal, for ventilating and air-conditioning installations; drain pipes, not of metal; chimneys, not of metal; rigid pipes, not of metal building; ceramic pipes; angle irons, not of metal; lengthening pieces, not of metal, for chimneys; plywood; door panels, not of metal; cement; pantiles; roofing tiles, not of metal; slate; clinker stone; wood veneers; outdoor blinds, not of metal and not of textile; clinker ballast; building panels, not of metal; waterproofing elements, not of metal; concrete building elements