HIGH QUALITY AIR FILTER designed to replace your humidifier filter and help restore clean air. HEALTHIER LIFESTYLE! High-quality humidifier filter helps reduce the release of limestone, bacteria, germs, and fungi into the air. Safe and clean operation for your home environment. EASY TO INSTALL simply remove the old filter and insert the new one to resume use quickly. ANTIMICROBIAL TREATMENT helps inhibit the growth and spread of mold, fungus, and bacteria on the filter. Effectively reduces minerals and pollutants from water. REPLACEMENT FILTER compatible with natural cool moisture humidifiers. Helps improve air quality by reducing minerals and impurities in water. Replace every 2 weeks for optimal performance. Color: white Material: composite material Package Contents: 4 x Humidifier Filter Note: Light reflection and display differences may cause slight color variation between the image and actual item. Measurement error allowed is +/- 1-3 cm.