In-Line Ceiling Exhaust Fan, Discharge Direction Horizontal, Duct Diameter Not Applicable, Duct Height 4 1/2 in, Duct Width 18 1/2 in, Duct Shape Rectangular, Nameplate Voltage 120V AC, Exhaust Airflow @ 0.100 in SP 526 cfm, Exhaust Airflow @ 0.250 in SP 494 cfm, 496 cfm, Noise Level @ 0.100 in SP @ 5 ft 2 sones, Fan Wattage 232 W, Frequency 60 Hz, Full Load Current 2.2 A, Housing Material Steel, Motor Output Power 232 W, Motor Type Permanent Split Capacitor, Mounting Type Mounting Brackets