Aviaries not of metal; Balustrades, not of metal; Dog doors not of metal; Greenhouse frames, not of metal; Mantelpieces, not of metal; Non-metal balcony enclosures; Non-metal lawn edging; Non-metal safety doors; Nonmetal pet doors; Plastic landscape edgings; Shutters, not of metal; Tombstone plaques, not of metal; Water-pipe valves, not of metal or plastic; Wooden fencing in the nature of a noise barrier