Air Purifier, Compatible HVAC System Size 1.5 to 5 tons, Number of UV-C Bulbs 1, Duct Insertion Length 17 3/4 in, Voltage 120/240V AC, Removes Airborne Bacteria, Mold and Fungi, Viruses, Mounting Location Ductboard, Plenum, Sheet Metal Air Duct, Filters Included Carbon, Air Cleaning Method Photocatalytic Oxidation, Frequency 60 Hz, Germicidal Efficiency 93.6 Percent, Housing Color White, Includes Power Cord, Duo-2000 Air Purifier, UVC Germicidal Lamp, Includes Mounting Hardware Yes