Replacement filter for LivePure Aspen Series Air Purifier. Medical-grade, true HEPA filtration removes up to 99. 97 percent of airborne particles as small as 0. 3 microns from the air including smoke, pollen, dust, pet hair and dander, mold spores and dust mites. Sealed with a foam gasket surrounding the filter, air flows through rather than around the filter, increasing the air cleaning efficiency of the filter. Recommended to replace every six (6) months for maximum efficiency, or more often in harsh environments. Fits LivePure air purifier models: LP350TH, LP350THP, LP350TH-WHT, LP350TH-BLK, LP350THP-WHT, LP350THP-BLK. Replaces part number LP-HF350.