Air-conditioning apparatus and installations; Commercial refrigerators and freezers and replacement parts and fittings therefor; Flexible pipes being parts of sink plumbing installations; Heating systems for residential and commercial buildings comprised of boilers, valves, pipes, manifolds, control panel switches, and electrical wire, all sold as a unit; Hoods for ranges; Incandescent light bulbs; Laundry centers, namely, a clothes dryer combined with a clothes washer; Multi-purpose, electri...