The 12-inch Flex-A-Lite X-Treme Dual S-Blade Reversible Electric Fan is a pusher-puller / reversible automotive fan system that can be mounted in front of or behind the radiator to improve engine cooling. Built in the USA with globally sourced materials, this cooling fan has an airflow of 3000 CFM (cubic feet per minute), operates at 60-percent power on startup, features increasing fan speed as temperature rises, and runs for as long as 25 seconds after the vehicle is turned off. Its durable shroud contains two S-blade fans that direct maximum airflow through the radiator while producing less noise. 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. 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 help prevent overheating. 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 Dual S-Blade Reversible Electric Fan System is an easy-to-mount engine-cooling solution.