Generic Circular Humidifier Wick Filter fits Holmes models HM-1845, HM1850, HM-1855, HM-1975, HM-2059, HM-2060W, HM-2090, HM-3000, HM-3800, HM-3850 and HM-4000. Fits GE/General Electric model 106663 and White-Westinghouse model WWHM1840. Measures 7 1/2 inches tall
Holmes HEPA Air Cleaner Filter. Fits Holmes models HAP615, HAP625, HAP650, HAP653, HAP675, HAP675RC, HAP725, HAP726, HAP750, HAP756, HAP1725 and HAP1750. Also fits GE models 106633, 106643 and 106653 and Bionaire models BAP1175, BAP1300, BAP1125, BAP1150, BAP1225 and BAP1250. Replace filter every 3 to 4 months. This is a genuine Holmes HEPA filter.