Honeywell HC888 Humidifier Wick Filter is a Protec antimicrobial treated, humidifier filter designed to maximize moisture output with its optimized filter design. This tabletop filter effectively captures minerals and pollutants from water, helping to prevent the buildup of white dust. The Protec antimicrobial treatment further inhibits the growth and migration of mold, algae, and bacteria on the filter, ensuring cleaner and healthier air. It is compatible with HEV-320B and HCM-890 models and measures 6 inches in height and 6 inches in diameter.