Drain traps [valves], not of metal or plastic; Valves, not of metal or plastic; Water-pipe valves, not of metal or plastic; Balustrades, not of metal; Plastic landscape edgings; Buildings, not of metal; Palings, not of metal; Latticework, not of metal; Fences, not of metal; Cold frames, not of metal; Trellises, not of metal; Horticultural frames, not of metal; Greenhouse frames, not of metal