Air cleaning units containing an air filter, ultraviolet lights and a photocatalytic filter; Aquarium filters; Baths, bathtubs, whirlpool baths and bath installations; Electrolytic water generators for electrically decomposing tap water to generate electrolytic water and for removing chlorine odor from tap water; Filters, heaters and pumps sold in combination for use in swimming pools; Gas water heater for bathtub consisting of circulation pump with thermostat to fill, re-heat water and keep ...