Overhead Ionizer Air Velocity 150 to 300 cfm Static Discharge Time 3.5 sec Depth 3 15/16 in Features (2) 700 lumen Light Panels 2 ft x 5 ft Coverage Area Low Offset Voltage Three-Speed Fan Tungsten Emitters Includes Certificate of Calibration Hanging Kit Power Cord Length 37 5/16 in Manufacturers Warranty Length 1 yr Product Type Overhead Standards NIST Calibrated Width 6 5/8 in Maximum Distance from Charged Surface 18 in Voltage 120V AC