The Honeywell Premium Replacement Humidifier Filter is an ideal replacement for natural cool moisture humidifiers and will greatly assist in the removal of minerals and pollutants from the water. The Protec treatment helps prevent the growth and migration of mold, fungus, algae and bacteria on the filter. This Honeywell replacement filter is compatible with Honeywell HCM-890 series and Duracraft Models DCM200, DH890 and DH888 cool moisture humidifiers. This filter has a blue fabric exterior that acts as an additional filtration layer that significantly increases the amount of dust captured before entering the filter. INCLUDES: 1 Humidifier Filter.