Airgle HEPAfast and Carbon Filters Clean Room Air Purifier (AG800) - 2 pcs HEPAfast Filter: Features 50 sq ft of premium HEPAfast filter that captures small particles such as tobacco smoke, dust mites, pollen, dander, smog, mold, and other airborne pollutants. Gas & Odor Filter: Features 3.0 lbs of coconut shell activated carbon impregnated with a blend of Potassium Hydroxide and Potassium Iodide that captures chemicals, tobacco smoke, odors, and volatile organic compounds (VOCs).