Bionaire True HEPA 360° Air Purifier For $18.72 From Amazon 3-STAGE FILTRATION: The 3-Stage Filtration System removes up to 99.97% of airborne pollutants and allergens, capturing particles as small as 0.3 microns; air filter is designed to include a pre-filter layer, True HEPA filter, and a carbon filter 360-DEGREE AIR INTAKE: 360-degree air intake system […]