19 Non-metal building products, namely, building panels, windows, doors, window frames, door frames, secondary glazing units, skirtings, architraves, covings, cladding, facia boards, soffit boards, bargeboards, window boards, rainwater pipes, guttering, gutter guards, cavity closers, wall panels, wall boards, floorboards, floor panels, roof boards, roof panels, roof trusses, decking, walkways, pontoons, verandas, handrails and railings for verandas and balconies, fencing, fence panels, fence posts, lattice panels, window panes, glass doors, double glazed units for windows and for doors