The 12-inch Flex-A-Lite X-Treme S-Blade Dual Reversible Electric Fan is an automotive fan system that can be mounted in front or behind the radiator to cool down and improve engine cooling. This dual cooling fan moves 3000 cfm (cubic feet per minute) of airflow, operating at 60-percent power on startup, increasing fan speed as temperature increases, and running for up to 25 seconds after the car is turned off. With overall dimensions of 15-1/2 x 26-1/4 x 4 inches, this car fan draws 29 amps from a 12-volt power supply and is built in the USA with globally sourced materials. Use this radiator fan as a stock belt-driven fan replacement to recover horsepower and improve fuel economy. Or mount it as an auxiliary fan to prevent overheating. With two S-blade fans and a durable fan shroud, this cooling fan produces less noise while directing the maximum amount of airflow through the radiator. It includes a Flex-A-Lite Variable Speed Controller and a temperature sensor to provide better cooling control than other car accessories. Whether used as a pusher or a puller fan, the Flex-A-Lite X-Treme S-Blade Dual Reversible Electric Fan System offers an easy-to-mount cooling solution to improve engine efficiency.