This Active Air ACFB10 10 in. in-line booster fan is an energy efficient way to help improve the chill inside your grow room, kitchen, or other warm areas. It can work as a standalone fan or may be mounted in-line with your existing 10 inch duct work to increase airflow. Rated at 661 cubic feet per minute (CFM), this fan moves free air gently enough that it won't knock over or harm planters and pots. Portable with quiet operation, it is made from heavy duty construction and UL-recognized components. Includes a pre-wired junction box and 8 foot power cord.