¹Notes: Our filter has a strong filtration performance of ultra fine particles. 99.97% filtration efficiency for 0.1~0.3?m airborne particulates, including pollen, dust, and animal dander allergens. Disclaimer: Tested by an independent lab.²CADR and Coverage area are calculated based on Levoit's Original Filters and are not applicable to other replacement filters.³Notes: Levoit Original Filter is HEPA-grade while operating in Sleep Mode, as tested by an independent lab.?Notes: For the best performance and longest lifespan, use official Levoit replacement filters.?Notes: Choose from a variety of replacement filters to best meet your needs. The Toxin Absorber Filter specializes in smog, toxins, and VOCs, while the Smoke Remover filter addresses smoke from wildfires, smoke, and other particulates. The Pet Allergy Filter captures fur and absorbs unpleasant odors.