Perfect Fit: 115115 Replacement Filter A for Winix C535, 5300, 5300-2, 6300, 6300-2, P300, AM90, C909, 9800 air purifiers. All manufacturers' names and part numbers are used for compatibility information only. Enjoy great value with reliable performance and a long service life H13 True HEPA Filter A: Captures 99.97% of airborne particles as small as 0.3 microns, effectively removes dust, pollen, pet dander, and smoke particles for a fresher, healthier home Strong Carbon Pre-Filter: Advanced activated carbon effectively filters wildfire smoke, cooking smells, pet odors, and VOCs—ideal for homes with pets, frequent cooking, or smokers Great Value: Comes with 2 H13 True HEPA Filters (each lasting 6–12 months) and 8 Activated Carbon Pre-filters (each lasting 2–3 months) Easy Setup: Just pop out the old filters and swap in the new ones into place. Fil-fresh delivers expert-designed, affordable air purifier filter solutions, making cleaner air accessible to all for a healthier, more comfortable home, Manufacturer: Fil-fresh