MC Enterprise 30130MC Aftermarket Dometic RV 12V Furnace Blower MotorThe furnace motor is attached to the blower wheel and the combustion air wheel. This is a 12V DC power motor, with two shafts. Once the control board sends power to the motor, it will start operating which will rotate the shaft attached to both wheels. The movement of both wheels will circulate the air causing air flow. the motor size and revolutions per minute will corresponds with the furnace BTU/hr size, making it very important to get the correct size motor for your furnace.Additional InfoMotor Diameter3″Motor Length3-3/8″Shaft #1 Length1-3/8″Shaft #2 Length1″Power Source12V DCFull Load Amps5.5Compatible with Dometic Furnaces: 8525-IIWARNING: This product may contain one or more chemicals known in the State of California to cause cancer and/or birth defects or other reproductive harm. For more information, visit www.P65Warnings.ca.gov