19 Partitions for building with frames not of metal; partitions for building not of metal; building materials, not of metal, namely, tiles, soffits, chimneys; transportable buildings, not of metal; reinforcing materials, not of metal, for building in the nature of concrete, concrete piles, reinforced glass; non-metallic materials for building, namely, tiles, soffits, chimneys; window frames not of metal; non-metallic door frames, tiles not of metal for building; framework for buildings, not of metal, in the nature of door and window frames; window cases not of metal; door cases, not of metal; staircases not of metal; windows not of metal; door frames not of metal; wainscoting not of metal; parquet floor boards, not of metal; laths not of metal; stair-treads in the nature of steps not of metal; wall claddings for building, not of metal; building panels, not of metal, in the nature of wall panels; wall linings, not of metal, for building; parquet flooring; ceiling panels not of metal; floors not of metal; door panels, not of metal; doors not of metal; posts, not of metal; palisading, not of metal; joists, not of metal; beams, not of metal; roof coverings for building not of metal; floor tiling, not of metal; fences, not of metal; non-metallic ducts for ventilation and air conditioning installations; transportable constructions in the nature of buildings not of metal; cornices not of metal; angle irons, not of metal; roof gutters not of metal; roof coverings, not of metal; roofing not of metal; paving slabs not of metal; tiles not of metal; jalousies not of metal; awnings not of metal in the nature of roofing for construction; lintels not of metal; shutters not of metal; sheet glass for building; insulating glass for construction purposes; window glass excluding glass for vehicle windows, stained-glass windows