HEPA-TYPE FILTER REPLACEMENT– This Homedics TotalClean 3-in-1 HEPA-Type Replacement Filter can help create a cleaner & healthier breathing experience; included is 1 AP-T20FL replacement filter for Homedics TotalClean AP-T20 and AP-T20WT 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; plus, the built-in prefilter and carbon odor filtration reduce unpleasant odors WORKS WITH HOMEDICS AIR PURIFIERS FOR HOME – Intended as a direct replacement filter for the Homedics TotalClean HEPA-Type Tower Air Purifiers models AP-T20 and AP-T20WT; the 360-degree 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; vacuum the prefilter monthly using the brush attachment of your vacuum cleaner WHAT’S IN THE BOX - (1) Homedics TotalClean 3-in-1 HEPA-Type Air Purifier Filter Replacement