FeaturesFits Holmes® models HAP240, HAP242, HAP243, HAP244, HAP246, HAP260, HAP260B, HAP413, HAP433, HAP440, HAP2404, HAP2604, HAP2604B, HE3001, HE3001-IQ, BAPF29-1 and PPS100. Does not fit the HAP412, HAP424 or HAP422 filters.99.97% HEPA Filtration...