GE JXRB57 is an indoor remote blower kit for 30" and 36" downdraft vents. It allows for the installation of the blower and motor outside of the cabinet, such as below the floor. This can be useful in situations where there is not enough space inside the cabinet for the blower or if you want to reduce noise levels. The kit includes all the necessary parts for installation, including mounting brackets, screws, and a transition duct. The blower is powerful enough to handle the airflow from most downdraft vents and is designed to be quiet and efficient.