11 Sanitary and bathroom installations, namely, toilets, sinks, bathtubs, and kitchen and bathroom sink sprayers; sanitary installations, namely, toilets, sinks, and bathtubs, water supply and sanitation equipment, namely, steam rooms, mixer faucets for water pipes, and ozone sanitizers for water; waste pipes being parts for sanitary facilities; flexible pipes being parts of sink plumbing installations; flexible pipes being parts of shower plumbing installations; flexible pipes being parts of bath plumbing installations; plumbing fittings, namely, bibcocks being faucets with bent nozzles fixed at the end of a pipe; toilets incorporating cisterns; toilet cistern levers; ballcocks and fill valves for toilet tanks; toilet bowls; chimney flues and installations for conveying exhaust gases from chimneys in the nature of chimney flues; safety valves for gas pipes, namely, reverse flow check valves; plumbing fittings, namely, stopcocks being valves for regulating the flow of gas; electric space heaters; indoor radiant linear heating systems; space heaters; radiant linear heating systems; space heating apparatus; pavement heating apparatus; ambient heating, ventilating, and air conditioning and purification apparatus and instruments; flush levers for toilets; flushing toilet tanks; waste fittings for sanitary ware, namely, waste pipes being parts of sanitary facilities; shower bases in the nature of shower pans; overhead showers; shower units being showers and shower cubicles; strainers for use with shower trays; flues for ventilating apparatus, namely, chimney flues