19 Non-metallic building materials, namely, doors, gates, garage doors, door and gate frames, fences, windows, window casements and surface-mounted casements, window sills, window panes, paneling for walls, ceilings and radiators; non-metal steps and banisters; non-metal windows, non-metal furniture, door and window fittings, namely, handles, latches, hinges, trim plates; pre-fabricated and modular non-metal ceilings and floors for buildings, and parquet wood flooring; and non-metal pre-fabricated housing