Derale Automatic Transmission cooler with integral fan. Ideal for racers that require cooling of transmission fluid when the vehicle is not in motion. This is a 16 pass double row cooler with a 650 CFM 10 inch Tornado Electric Fan, 25,000 GVW. AN fittings are compatible with existing rules and build practices. 10 3/4″ x 15 5/8″ x 4″.