Replacement Holmes HAPF30D Hepa Type Fillter (1) Pack by Breathe Naturally Aftermarket Replacement Hepa filter for HAPF30, HAPF30D, HAPF30D-U, Filter (A) Fits Holmes HAP2400, HAP2404, HAP240, HAP242, HAP243, HAP412, HAP413, HAP422, HAP424 and HAP433 Air purifiers Also fits Bionaire models BAP260, BAP815 AND BAP825 Air cleaners Removes up to 99% of dust and pollen as small as 2 microns from air passing through the filter Replacement Filter by Breathe Naturally