Motorized Impeller Impeller Type Backward Curve Motor Type Permanent Split Capacitor Fan Dia 11 in CFM @ 0.000-In. SP 992 cfm Voltage 230V AC 0.59 A Amps 105 W Watts 67 dBA Max Ambient Temp 104 Degrees F Depth 5 in Bolt Circle Dia 2 1/4 in Blade Material Galvanized Steel Mounting Position All Position Except Rotor Up 60 Hz Thermal Protection Auto Standards UL Component Recognized Motor