HIGH QUALITY AIR FILTER designed to replace your humidifier filter and help restore clean air quality. HEALTHIER LIFESTYLE! Premium humidifier filter made with high-quality materials to help reduce the presence of limestone, bacteria, germs, and fungi in the air. Safe and effective for cleaner humidifier performance. EASY TO INSTALL simply remove the old filter and insert the new one for immediate use. ANTIMICROBIAL TREATMENT helps inhibit the growth and spread of mold, fungus, and bacteria on the filter surface. Helps remove minerals and impurities from water. Ideal replacement for natural evaporative cool mist humidifiers, improving water cleanliness. Replace every 2 weeks for optimal performance. Color: White Material: Composite material Package Contents: 4 x Humidifier Filters Note: Only the items listed are included. Light reflection and display differences may cause slight color variation between image and actual product. Measurement error allowed within +/- 1-3 cm.