Product Detail Semi-flush ceiling-mounted air-filtration system for large commercial spaces Filter removes 95-percent of airborne particles down to 0.3 micron in size Activated-carbon prefilter; 2 CPZ modules for removing VOCs and odors 3 speeds (1125 CFM on high); Coanda airflow distribution; galvanized-steel housing Measures 48 by 24 by 21-3/4 inches; 2-year limited warranty . The "Honeywell F111C1012B-3S Commercial Ceiling-Mounted Media Air Cleaner, Black" is best product for you. We recommended Honeywell F111C1012B-3S Commercial Ceiling-Mounted Media Air Cleaner, Black