Cwxwei AF3001 Air Filter,Replacement Filter for SY910 Air Purifier and KJ150 Air purifier,3-in-1 H13 True HEPA Filter

Compatibility: it’s ONLY compatible with Cwxwei air purifiers, please search for "B09WY14RNR" to buy the air purifiers. Replacement Time: When the air purifier indicator time from 1500 to 0, you should replace the filter, or you can replace it once every 2-4 months. 3-in-1 Filter: Pre Filter, Activated Carbon Filter, HEPA Filter. H13 True HEPA: remove 99.97% of smoke, dander, hair, dust, smell and any particles larger than 0.3 micron effectively. Perfect Air purifiers for home, bedrooms, small rooms, offices, living rooms, baby rooms, kitchens and basements.