Protec treated, replacement humidifier filter. Features an optimized filter design to maximize moisture output. Filter captures minerals and pollutants from water and helps prevent white dust. Protec treatment helps inhibit the growth and migration of mold, algae, and on the filter. Humidifier Type: Tabletop \nDimensions: 6 In. H x 6 In. Dia. \nModel Compatibility: HEV-320B & HCM-890 \n pack of 3