19 Transportable buildings, roofing and roof coverings, all not of metal; accessories and interior fittings for the aforesaid goods, namely, floors, balcony fixtures, podium constructions of wood, transportable floors, not of metal, wall linings, not of metal, for building, floor system elements, not of metal, partitions, not of metal; props, not of metal; temporary structures, not of metal; building materials (non-metallic); non-metallic rigid pipes for building