To ensure stated product performance, use only genuine Honeywell Replacement Wicking Filter model HC-888. It is treated with Protec antimicrobial to inhibit up to 99.99% of mold growth on the filter. Filter captures minerals and pollutants from water & helps prevent white dust Optimized Filter Design maximizes moisture output Fits Honeywell Model: HCM-890 and Duracraft Models: DCM-200, DH-890, DH-888. Use with cool moisture evaporative humidifiers This replacement filter for Honeywell natural cool moisture humidifiers removes minerals and pollutants from water. Protec Antimicrobial Treatment helps prevent the growth and migration of mold, fungus, algae and bacteria on the filter. The filter material is reinforced for maximum efficiency and longer filter life. Plus, the exclusive Dry Lift Handle helps to keep hands dry and clean while changing your filter.