This Ventline Stove Vent Hood Fan Motor features a round shaft and 12VDC. Specifications•Compatibility: Standard Stove Vent Hood And Roof Vent•Voltage Rating: 12 Volts DC•With Mounting Hardware: No 1-1/2 Inch Round Shaft CSA (Canadian Standards Association) Listed | Ventline Stove Vent Hood Fan Motor, 12 Volts