Product Detail Advanced air cleaning device for a wide range of gaseous compounds, odors and particulates. For tobacco smoke control, multiple chemical sensitivities, and wide spectrum gas filtration. 12 pounds of gas phase media. Coverage area of 900 sq ft (based on maximum fan speed and an 8.5 ft ceiling) . The "IQAir MultiGas GC Air Purifier - High Quality Gas and Odor Air Cleaner" is best product for you. We recommended IQAir MultiGas GC Air Purifier - High Quality Gas and Odor Air Cleaner