1.2. Smoke-free CADR(cmf) 143 for 222 sq.ft*. Purify 1073 sq.ft* 1x per hour 3. 0.1-0.3um Particles 99.97% Efficiency. Notes*: 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 4. HEPA Sleep Mode: Disclaimer?Levoit Original Filter is HEPA-grade while operating in Sleep Mode, as tested by an independent lab or Levoit's Original Replacement Filter supports Vital 100S-P HEPA Sleep Mode. 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.