Air filtering installations; Air filtering units; Air filters for air conditioners in vehicle passenger compartments; Air filters for air conditioning units; Air filters for air-conditioning units; Air filters for domestic use; Air filters for furnaces; Air filters for heating and cooling registers; Air filters for household purposes; Air filters for household use; Air filters for HVAC units; Air filters for industrial installations; Air filters for industrial purposes; Air filters for industrial use; Air filters for vehicle cabins; Air cleaning units containing an air filter, ultraviolet lights and a photocatalytic filter; Filters and filtering devices for air and gas conditioning; Filters for air conditioning; Filters for air extractor hoods; Apparatus for the separation of gases being air filtering installations; Fibrous filtering media for general industrial use in the purification of air and industrial fluids; Industrial air filter machines