TRUE HEPA FILTRATION: Filter helps remove up to 99.97% of dust, smoke, pollen, odors, mold spores, and pet dander from the air passing through it, filtering particles as small as 0.3 microns to help provide cleaner air for your home or officeCOMPATIBLE: Compatible with select Holmes Air Purifiers2-PACK: Includes 2 replacement filtersFITS HOLMES AIR PURIFIER MODELS: Compatible with HAP412, HAP422, HAP424, HAP702, HAP706, HAP716, HAP1702, HAP2400, HAP9240, HAP9241, HAP9242, HAP9243, HAP9412, HAP9413, HAP9414, HAP9415, HAP9422, HAP9423, HAP9424, and HAP9425 modelsFITS BIONAIRE AIR PURIFIER MODELS: Compatible with BAP260, BAP520, BAP815, BAP825, BAP9200, and BAP9700 models