Air-conditioning, air cooling and ventilation apparatus and instruments; Air cleaning units containing an air filter, ultraviolet lights and a photocatalytic filter; Air filtering installations; Air filters for air conditioners in vehicle passenger compartments; Air filters for industrial purposes; Air filters for industrial use; Air filters for domestic use; Air filters for industrial installations; Filter cartridges for industrial dust collection systems for use in pulse-jet cleaning; Filters for fluids, namely, for water and area-water solutions; Filters and filtering devices for air and gas conditioning; Filters for air extractor hoods; Filters for air conditioning; Filters made of fiber for water filtration; Industrial air filter machines; Interior environment control system for commercial buildings, namely, heaters, ventilators and humidifiers all sold as a unit; Vehicle climate-control system for heating, ventilation and air-conditioning; Ventilating fans for commercial and industrial use; Ventilating fans for industrial purposes; Ventilating, high-velocity portable exhaust fans for commercial and agricultural use; Ventilation hoods; Water filtering apparatus; Drying apparatus for use in heating, ventilation systems, air conditioning systems and refrigeration systems; Fibrous filtering media for general industrial use in the purification of air and industrial fluids