Designed for aer1 anytime air purifiers, replacing filters, D filters, K filters For BAP260, BAP815, BAP825, BAP9200, BAP9700, BAP520.For CAP531-U, CAP529-U, HAP240, HAP242, HAP412, HAP422, HAP424, HAP706, HAP716, HAP9240, HAP9242, HAP9412, HAP9414, HAP9422, HAP9422,HAP1200. Filter 99.97% of contaminants as small as 0.3 Micrometres, such as dust, pet dander. True HEPA filter air purifiers operate at full capacity. It is recommended to replace the filter every 6 months. Keep the air purifier running properly. Timely replacement of filter element, fresh air. Excellent performance :HEPA removes large areas and airborne particles, including dust and common pollutants. Carbon pre-filters reduce chemical volatile compounds and are perfect for pet owners and people who are sensitive to air. Say goodbye to dust, dander, pollen, smoke, etc. Colour:As Shown Material:plastic Package Contents: 4x Air Filter Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.