Air cleaning units containing an air filter, ultraviolet lights and a photocatalytic filter; Air purification units; Air purifiers; Air purifying apparatus and machines; Aquarium lights; Combination ozone sanitizer and electric deodorizing units; Luminaires, using light emitting diodes (LEDs) as a light source, for street or roadway lighting; Plug-in diffusers for air deodorizers; Projection spotlights; Swimming pool water cleaning and filtering units; Water filtering units for domestic, commercial, industrial use; Water filtration and purification units and replacement cartridges and filters therefor for refrigerators, ice makers; Water purification and filtration apparatus; Water treatment equipment, namely, cartridge filtration units; Water treatment equipment, namely, water filtration units