High-Quality Replacement Filter Set - 1 H13 True Hepa Filter +6 Activated Carbon Pre-Filters | | Compatible With Winix D480 Air Purifier, Part Number # Filter D4 / 1712-0100-02 | | H13 True Hepa Capture 99.97% Of Airborne Dusts Pm2.5 Down To 0.3 Microns In Size. Remove Large And Airborne Particles, Including Dust, Common Pollutants ,Activated Carbon Pre-Filter Reduce Chemicals Vocs, Tobacco Smoke, Pm2.5,Common Household Bad Smell,Prevents Large Particles Such As Dander,Pet Hair | | Please Replace Regularly To Keep Your Machine Fresh And Clean,For Best Results, Remove The Filter Once A Month And Clean With A Soft Brush Or Gently Vacuum. | | Top-Notch Quality Used For Maximum