3 Stage
Filtration Pre-Filter: Catches large particles like dust and hair
Activated Carbon Filter: Removes small particles like dust mites, pollen, dander, and allergens. It also helps remove any gases that may have gotten through like smoke and various odors.
HEPA Filter: Captures ANY particles as small as 0.01 Microns in size (10 nanometers) This includes various bacteria and viruses. The SARS- CoV2 virus is approximately 0.125 Microns (125 Nanometers) which means the HEPA filter would catch any airborne Coronaviruses or any other viruses for that matter.