In-Line Ceiling Exhaust Fan Discharge Direction Horizontal/Vertical Duct Diameter Not Applicable Duct Height 8 in Duct Width 8 in Duct Shape Square Nameplate Voltage 115V AC Exhaust Airflow @ 0.100 in SP 590 cfm Exhaust Airflow @ 0.250 in SP 238 cfm 540 cfm Noise Level @ 0.100 in SP @ 5 ft 0.6 sones 1.4 sones Fan Wattage 160 W Frequency 60 Hz Full Load Current 0.8 A 2.4 A Housing Material Steel Motor Output Power 124 3/10 W Motor Type Electronically Commutated