HIGH QUALITY AIR FILTER designed to replace your humidifier filter and help restore clean air. HEALTHIER LIFESTYLE! High-quality humidifier filter helps reduce the presence of minerals, bacteria, germs, and fungi in the air. Safe and effective for maintaining clean indoor air. EASY TO INSTALL Simply remove the old filter and insert the new one for quick maintenance. ANTIMICROBIAL TREATMENT helps inhibit the growth of mold, fungus, and bacteria on the filter. Effectively reduces minerals and impurities from water. Ideal replacement for evaporative cool mist humidifiers. Replace every 2 weeks for optimal performance. Color: White Material: Composite material Package Contents: 4 x Humidifier Filters Note: This package includes only the items listed. Other products are not included. Light reflection and display settings may cause slight color variations between the image and the actual product. Measurement error allowance: +/- 1-3 cm.