In-Line Ceiling Exhaust Fan Discharge Direction Horizontal/Vertical Duct Diameter Not Applicable Duct Height 8 in Duct Width 18 3/4 in Duct Shape Rectangular Nameplate Voltage 115V AC Exhaust Airflow @ 0.100 in SP 1 543 cfm Exhaust Airflow @ 0.200 in SP 1 503 cfm Exhaust Airflow @ 0.250 in SP 1 483 cfm Noise Level @ 0.100 in SP @ 5 ft 3.2 sones Fan Wattage 822 W Frequency 60 Hz Full Load Current 7.8 A Housing Material Steel Motor Output Power 871 W Motor Type Shaded Pole