19 Alabaster; potters' clay; firebricks; bricks; earth for bricks; fireclay; buildings, not of metal; building glass; cornices, not of metal; angle irons, not of metal; doors, not of metal; stone; plate glass [windows] for building; clay; granite; sandstone for building; sandstone pipes; macadam; monuments, not of metal; buildings, transportable, not of metal; porches [structures], not of metal; mosaics for building; building stone; artificial stone; floors, not of metal; roofing tiles, not of metal; platforms, prefabricated, not of metal; road coating materials; statues of stone, concrete or marble; terra-cotta [building material]; roofing, not of metal; arbours [structures], not of metal; wainscotting, not of metal; works of art of stone, concrete or marble; building materials, not of metal; bicycle parking installations, not of metal; tiles, not of metal, for building; floor tiles, not of metal; paving slabs, not of metal; building panels, not of metal; figurines of stone, concrete or marble; refractory construction materials, not of metal; tile floorings, not of metal; wall tiles, not of metal; slabs, not of metal, for building; enamelled glass, for building; pillars, not of metal, for building; floating floor boards, not of metal; smart glass for building