13 DOMESTIC AND INDUSTRIAL PLUMBING AND SANITARY FIXTURES, SUPPLIES AND APPARATUS-NAMELY, SINKS, BATHTUBS, LAVATORIES, DRINKING FOUNTAINS, LAUNDRY TRAYS, SHOWER HEADS AND RECEPTORS, SHOWER RODS, URINALS AND PARTS AND FITTINGS THEREFOR [ , AND FOR SEWAGE DISPOSAL SEPTIC TANKS ]