Water heaters; Exhaust fan for bathrooms and ventilation; Air valves for steam heating installations; Bathtub and shower linings; Bathtub and shower enclosure fittings; Shower cubicle enclosures; Sanitary apparatus and installations, namely, toilets; Bath tubs for sitz-baths; Disinfectant apparatus, namely, disinfectant dispensers for toilets; Plumbing fixtures and fittings, namely, shower control valves, shower sprayers and shower heads