Ventilation Duct Fan; Voltage Rating 120 Volt AC at 60 Hertz; Current Rating 0.2 Amp; Air Flow Rate 80 CFM at 0.1 Inch, 60 CFM at 0.25 Inch; Sound Level 1.5 Sones at 0.1 Inch; Duct Shape Round; Duct Size 4 Inch Diameter; Grill Shape Rectangle; Grill Size 11-13/16 Inch Length x 11-7/16 Inch Width; Housing Shape Rectangle; Size 9 Inch Width x 9 Inch Depth x 5-3/4 Inch Height; Housing Material Robust Steel; Approval ETL (Canada and US), HVI 2100, CALGreen; Grille Type Sturdy; Application Residential/Commercial Bathroom Exhaust, Local Exhaust, Dwelling Unit Ventilation; Energy Efficiency 3.3 CFM per Watt