LifeSupplyUSA True HEPA Replacement Filter Fits Winix Ultimate 119110 Size 21 and WAC9500 Fits Winix plasma wave air cleaner model 9000 - 4-stage replacement filter cartridge Fits Winix Part Numbers: 119110, 115115, 115119, 115122 - Convenient all-in-one replacement cartridge True-HEPA Filter Helps effectively filter airborne irritants such as smoke, pollen, dust, mold spores, pet dander and fabric fibers. 4 Stages of air cleaning Removes 99% of all airborne pollutants as small as 0.3 microns from the air passing through the filter. Brand new individually sealed complete cartridge set replacement - all-in-one replacement cartridge