19 Building materials, namely, composite panels composed primarily of non metal materials; door casings, not of metal; door frames, not of metal; door jambs not of metal; door panels, not of metal; non metallic transportable buildings; non-metal building material, namely, fascia; non-metal building materials, namely, soffits; non-metal building products, namely, shutters, shingles, siding, and trim; non-metal castings; non-metal ceiling panels; non-metal doors; non-metal patio doors; non metal door parts for buildings, namely, adjusters for adjusting the height of a door, floor boards, columns, beams, paneling boards, sills, sleepers, backings for ceilings or walls, stiles, rails and ceiling boards; fixed and retractable building covers, not of metal, namely, roofing; portable, modular, and prefabricated buildings, not of metal; porches, not of metal, for building