[ Aircraft lavatories sold equipped with sanitary facilities, namely, toilets and sinks; Automatic flush valves for toilets; Baths, bathtubs, whirlpool baths and bath installations; ] Drain structures for use in spas, steam rooms and baths; [ Electric hand drying apparatus for washrooms; Equipment for treating groundwater and soil comprising distribution lines, distribution manifolds, drop tubes, well seals and blowers; External filtering device for use in a local containment area for removing oil and other contaminants from storm drain effluent as it exits storm water systems; ] Faucet handles; Faucets; Flexible pipes being parts of bath plumbing installations; Flexible pipes being parts of sink plumbing installations; [ Flush levers; Heating systems composed primarily of tubes, pipes and manifolds through which warm or high temperature water circulates; Heating systems for residential and commercial buildings comprised of boilers, valves, pipes, manifolds, control panel switches, and electrical wire, all sold as a unit; ] Mixer faucets for water pipes; Pipes being parts of sanitary facilities; Plumbing fittings, namely, drains; [ Pressure regulators for sanitary installations; Sanitary installations in the nature of steam rooms; Sink drainer system comprised of a drain tray, sink mount, kick stand and rod; ] Sinks; [ Solar collectors for heating; Solar thermal installations, namely, solar thermal modules; ] Strainers for plumbing drains; [ Swimming pool drain covers; ] Tap water faucets; Taps for washstands; [ Toilet conversion kits for converting a single-flush toilet into a dual-flush toilet; Toilet seats; Toilets; ] Waste water purification units; [ Water filtering devices, namely, water purification installations for waste water and sewage consisting of curtains and textile fabrics; ] Water purification installations; Water purification machines