In-Line Duct Fan For Fan Type Centrifugal Duct Fan Airflow @ 0.000 in SP 187 cfm Duct Diameter 4 in Motor Output Power 80 W Motor IP Rating IP44 Nameplate Voltage 120V AC Phase 1 Number of Speeds 1 Overall Diameter 10 in Overall Height 10 5/8 in Overall Width 10 in Application General Purpose High-Efficiency Motor No Housing Material Plastic Motor Speed 2 900 RPM Includes Mounting Bracket Maximum Inlet Air Temperature 140 Degrees F Speed Control Included No