FilterBuy HWF65 Holmes Humidifier Filter. Replaces HWF-65 & H65-C. Fits Holmes humidifier models HM1800, HM1840, HM1845, HM1850, HM1851, HM1855, HM1888, HM1895, HM2059, HM3000, HM7600, and HM4000. FilterBuy HWF65 Holmes Replacement Humidifier Wick Filter. Designed to fit models HM1800, HM1840, HM1845, HM1850, HM1851, HM1855, HM1865, HM1888, HM1889, HM1895, HM1975, HM2059, HM2060W, HM2090, HM3000, HM3800, HM3850, HM7600, and HM4000. This humidifier filter is designed to prevent growth and migration of mold, fungus, algae, and bacteria. Premium aftermarket replacement, designed by FilterBuy in the USA. FilterBuy: Breathe Better!