This is a run capacitor. It is 220 VAC (volts alternating current) and is used in conjunction with your freezer. This part helps the compressor kick on and off while maintaining a constant temperature to keep things frozen in your freezer. It does this by sending constant electric currents to the motor windings, this will create a magneti...Read morec field that allows the motor to keep running. This part measures to be almost 1.5 inches tall, 2.5 inches wide, and 3/4 of an inch thick. It is black color and 15 mfd (microfarad).