The Active Air In-Line fans help control odor and temperatures in your indoor grow area or hydroponics garden. Active Air Duct Fans not a wimpy inline duct fan. It includes a 120 volt power cord and mounting brackets are provided for easy installation. With it's high quality molded impeller and UL-recognized components, this fan is built for quiet operation. An average rated life of 20,000 hours and a 5 year warranty guarantees this fan is an economical value. Perfect for use with carbon filters, air cooling lighting reflectors or attaching to ducting to ventilate your grow room! 4" In-Line Fan - 165 CFM 6" In-Line Fan - 400 CFM 8" In-Line Fan - 720 CFM 10" In-Line Fan - 760 CFM 12" In-Line Fan - 1185 CFM Active Air In-Line Duct Fans offer innovation and performance at a great price. With a full line of fans to meet your needs, all Active Air Fans feature: Quiet operation Durable ceramic-coated Metal housing UL-recognized components High quality molded impeller Thermally-protected AC motor Includes mounting brackets and 8 foot pre-wired 120V cord Unit Outside Dimensions: 4" Fan - 10" 6" Fan - 11" 8" Fan - 13" 10" Fan - 13" 12" Fan - 15" Junction box - an additional 1.75"