11 INFLOW AND OUTFLOW FITTINGS, NAMELY, TAPS, SPOUTS, VALVES, AND DRAINAGE AND OVERFLOW FITTINGS, NAMELY, DRAIN COVERS AND OVERFLOW VALVES, ALL FOR SANITARY BASINS, WASHSTANDS, SINK UNITS, BIDETS, BATH TUBS AND SHOWER TRAYS; INSTALLATION AND FASTENING PARTS FOR SANITARY INSTALLATIONS, NOT OF METAL, NAMELY, SHOWER HEADS, PIPES AND FLEXIBLE PIPES