SHOWERS; SHOWER PARTS AND FITTINGS, NAMELY SHOWER CONTROL VALVES; HAND SHOWERS; HEAD SHOWERS; SIDE SHOWERS; HAND SHOWER HOLDERS; SHOWER HOSES AND SHOWER RAILS BEING STRUCTURAL PARTS OF SHOWERS; SHOWER SETS CONSISTING OF HAND SHOWERS, SHOWER RAILS, AND SHOWER HOSES; SHOWER SYSTEMS CONSISTING OF HAND SHOWERS, HEAD SHOWERS, SIDE SHOWERS, CONTROL VALVES, SHOWER HOLDERS, SHOWER RAILS, AND SHOWER HOSES; AND PARTS THEREFOR