Motorized Impeller Impeller Type Backward Curve Motor Type Permanent Split Capacitor Fan Dia 6 7/8 in CFM @ 0.000-In. SP 320 cfm Voltage 230V AC 0.3 A Amps 70 W Watts 70 dBA Max Ambient Temp 104 Degrees F Depth 2 1/8 in Bolt Circle Dia 2 1/4 in Blade Material Galvanized Steel Mounting Position All Position Except Rotor Down 60 Hz Thermal Protection Auto Standards UL CSA Component Recognized Motor