19 Non-metallic facades, construction and building materials not of metal, namely, gates doors, door frames, door boards, supporting beams, sills, roofs, roof tiles, railings, fences, crossbars, facings, gratings, drainage and water pipes, lintels, windows and window frames, floor tiles, shutters; laths, not of metal; masts, not of metal; transportable buildings, not of metal; roof coverings, not of metal; roof flashing, not of metal; gutters, not of metal; outdoor blinds and their components, not of metal and not of textile; building panels, not of metal; tiles, not of metal, for building; arbors structures, not of metal; ducts, not of metal, for ventilating and air-conditioning installations; insect screens not of metal; building glass; window glass for building; scaffolding, not of metal; partitions for building, not of metal; wall linings, not of metal, for building; outdoor blinds, not of metal and not of textile