Wolf 804701 is an exterior ventilation kit designed to remove smoke, odors, and other pollutants from your kitchen. It is designed to be used with Wolf range hoods (excluding CTWH30, CTWH36, 1H4227) and features a powerful motor that can move up to 1500 cubic feet of air per minute. The kit includes a 10-inch diameter duct and a roof or wall-mount flange, making it easy to install in any kitchen. The Wolf 804701 is also equipped with a spring-loaded damper that helps to prevent backdrafting and a thermal overload that automatically shuts off the motor if it becomes overheated.