The Dual X-Treme fan systems feature Flex-a-lite’s powerful pull style fans that are reliable and more efficient than standard angled flat-blades. The fan systems are manufactured from injection molded glass reinforced nylon, which makes them strong and flexible. Part number 480 and 490 measure 26-1/4” x 15-1/2” X 4” and have universal fit attachment points for easy installation. The 480 model comes with an adjustable thermostat, AC relay and Flex-a-lite’s variable speed control, that monitors coolant temperature and adjusts fan speed to match cooling demand. All of Flex-a-lite’s products are made in the U.S. from the highest quality materials. Contact Flex-a-lite at (800) 851-1510 www.flex-a-lite.com