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 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 to quickly resume operation. Antimicrobial treatment helps inhibit the growth and spread of mold, fungus, and bacteria on the filter. Helps remove minerals and impurities from water. Ideal replacement for natural cool moisture humidifiers, improving water quality during use. 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 above. Other products are not included. Light reflection and differences in display screens may cause slight variations in color between the product image and the actual item. Measurement error allowance: +/- 1-3 cm.