Filters for range hoods; filter papers for range hoods; non-woven fabric filters for range hoods; filters for air conditioners; filter papers for air conditioners; non-woven fabric filters for air conditioners; filters for range exhaust fans; filter papers for exhaust fans; non-woven fabric filters for exhaust fans; filters for air purifiers; filter papers for air purifiers; non-woven fabric filters for air purifiers; filters for air vents; filter papers for air vents; non-woven fabric filters for air vents; air filtering units, namely, pollen and dust preventing filters for use on window screens; air filters for domestic use; Dirt preventing covers for extractor fans and range hoods; dirt preventing filters for extractor fans and range hoods; dirt preventing filter papers for extractor fans and range hoods; dirt preventing non-woven fabric filters for extractor fans and range hoods; dirt preventing filters for air conditioners for cleaning purposes; dirt preventing filter papers for air conditioners for cleaning purposes; dirt preventing non-woven fabric filters for air conditioners for cleaning purposes