Humidifier filter traps water impurities and dissolves solids before they become airborne. It will fight against the growth of bacteria, mold, and fungus, and is also a healthy way to relieve dry sinuses and cold symptoms. Be sure to replace the filter for your humidifier once per season, depending on use and air quality. Please note that this is a replacement product, not an OEM product. Color: Beige / Cream.