This Active Air ACFB6 6-inch 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 6-inch duct work to increase airflow. Rated at 188 cubic feet per minute (CFM), this 25-watt fan moves free air gentle 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 an 8-foot power cord.