Today we're going to take a look at the Flex-a-Lite 19 inch Belt-Driven Standard Rotation Flex Fan, and it's blue in color. This Flex-a-Lite Flex Fan will move a considerable amount of air at idle. The blade's flattened out at a higher engine RPM to reduce engine drag for better performance and improved fuel economy. It has an aggressive pitch blade design so it does move the most air at idle,… see more >