Apparatus for water supply and sanitary purposes; baths, spa baths, shower cabinets, shubs, showers; shelves, lavatories, bidets and supports therefor all for installation in shower cabinets; vanity unit tops incorporating basins; hand basins; bathroom and toilet products and accessories in this class; water closets, toilet bowls (including bowls of vitreous china), toilet seats, urinals, heated towel rails; water pipes for sanitary installations, water flushing apparatus and installations, water supply installations, faucets, mixers, taps and regulating accessories for water pipes