Bissell air400 Professional Air Purifier with HEPA and Carbon Filters for Large Room and Home, Quiet Bedroom Air Cleaner for Allergies, Pets, Dust, Da

3 Stage Filtration. Includes a Pre-Filter, an Activated Carbon Filter and a HEPA Filter which captures 99.97% of 0.3 micron particles and smaller including pollen, dust, smoke, hair, and pet dander Honeycomb Structure Filter. Activated Carbon Filter has a unique honeycomb design filled with carbon pellets to better effectively gasses and VOCs as well as odors from cooking, pets, smoke, and more Automated CirQulate System. Utilizes a PM 2.5 sensor to monitor, report and respond to changes in your indoor air quality by adjusting fan speed as necessary Filters Included. Comes with one HEPA Filter + Pre-Filter and one Carbon Filter Accommodating size. Tested to the AHAM standard to have a Smoke CADR of 279 for rooms up to 432 sq. ft., making it great for bedrooms, living areas, basements, and dining rooms.