One highly effective multigas filter with activated carbon. Up to 80% less expensive to replace MD Professional filters than filter replacement for other units.
Effectively removes 99.97% of all airborne particles 0.3 micron or larger in size. This includes mold spores, pet dander, dust mites, pollen, volatile organic compounds, gaseous contaminants and odors from smoke, pets and cooking.
Compatible with the Blueair MD Pro Air Purifier and 400 series BlueAir purifiers (any model number beginning with a 4).