In-Line Duct Fan, For Fan Type Centrifugal Duct Fan, Airflow @ 0.000 in SP 135 cfm, Duct Diameter 4 in, Motor Output Power 20 W, Motor IP Rating IP44, Nameplate Voltage 120V AC, Phase 1, Number of Speeds 1, Overall Diameter 8 1/2 in, Overall Height 11 in, Overall Width 7 1/2 in, Application General Purpose, High-Efficiency Motor No, Housing Material Galvanized Steel, Motor Speed 3,000 RPM, Includes Ceiling Grilles, Mounting Bracket, Grille Housings with Damper