balustrades, not of metal; fireplace mantles, not of metal; framework, not of metal, for building; chimneys, not of metal; manhole covers, not of metal; stair-treads [steps], not of metal; mouldable wood; artificial stone; ceilings, not of metal; greenhouses, transportable, not of metal; statues of stone, concrete or marble; floating docks, not of metal, for mooring boats; water-pipes, not of metal; drain pipes, not of metal; crash barriers, not of metal, for roads; geotextiles; roof gutters, not of metal; street gutters, not of metal; slabs, not of metal, for building; plastic landscape edgings