11 Bath waste system, namely, offset and direct drain outlet pipe configuration for plumbing; bath waste and overflow fittings; Waste fittings in the field of plumbing, namely, traps, lavatory drains, shower drains, couplings, sink strainers, and pipes being parts of sanitary facilities in the nature of continuous wastes, tailpieces, extension tubes, threaded tubes, and waste and overflow; Plumbing components in the nature of plumbing fittings, namely, drain fittings, waste fittings in the nature of couplers, sink strainers, valves, drains, overflow fittings in the nature of tub parts, namely, tub overflows; couplers, sink strainers, valves, drains, pipes being parts of sanitary facilities in the nature of vent fittings, sewer fittings in the nature of couplers, sink strainers, valves, drains, backwater valves; Plumbing fittings in the nature of drains, namely, shower drains and utility drains; Brass and plastic plumbing fixture waste fittings, namely, baffles, valves, traps; Pipes being parts of sanitary facilities in the nature of waste and overflow units for bathtubs