HEPA-TYPE FILTER REPLACEMENT– These Homedics TotalClean HEPA-Type Replacement Filters can help create a cleaner & healthier breathing experience; included are 2 AT-OFL replacement filters for Homedics TotalClean AT-PET01, AT-PET02, and AT-45 air purifiers HELPS CAPTURE MICROSCOPIC AIRBORNE PARTICLES – Homedics HEPA-Type air filters help capture up to 99% of airborne particles as small as 0.3 microns; eliminates smoke, dust, pollen, and more to help you and your family breathe easier WORKS WITH HOMEDICS AIR PURIFIERS FOR HOME – Intended as a direct replacement filter for the Homedics TotalClean Oscillating Tower Air Purifiers model AT-PET01, AT-PET02, and AT-45; the HEPA-type air filter is an odor eliminator for homes and reduces airborne allergens LONG LASTING FILTRATION - For optimal performance, replace every 12 months under normal usage conditions WHAT’S IN THE BOX - (2) Homedics TotalClean HEPA-Type Air Purifier Filter Replacements