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