This High Output Single RAD Fan is part of the new HO Aluminum Shrouded Fans Series that is designed with the application in mind. Based on some of the most common radiator core sizes sold today, these aluminum shrouds offer an adjustable yet precision fit electric fan shroud for most every application. The raw aluminum shroud gives the user the freedom to polish, anodize, paint, or simply leave it raw to create a truly custom look for an affordable price. The 17 inch high output two speed fan is one of the best in our line-up offering 2400 CFM when on high to create the most airflow possible in a compact size..