BATH AND SHOWER INSTALLATIONS, NAMELY, SHOWER CUBICLES, BATH BASINS IN THE NATURE OF BATH TUBS, SHOWER UNITS COMPRISING SHOWER DOORS, SHOWER SURROUNDS AND SHOWER TRAYS; DRAIN STRUCTURES FOR USE IN BATHROOMS IN THE NATURE OF PLUMBING FITTINGS, NAMELY, FLOOR DRAINS AND TRAPS MADE OF SYNTHETIC MATERIALS