Sanitary apparatus and installations, bath fittings, bath installations, bath plumbing fixtures, bath linings, bath tubs, showers, shower cubicles, sinks, wash-hand basins, wash-hand bowls, taps, mixer taps, bidets, water-closets, toilet-seats, urinals, water conduits installations, water distribution installations, water filtering apparatus, water purification installations, water flushing installations, water heaters; all included in Class 11.;