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 115V AC 0.6 A Amps 75 W Watts 67 dBA Max Ambient Temp 140 Degrees F Depth 2 3/4 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