Flex-a-lite aluminum dual fan shrouds allow you to mount two Flex-a-lite S-Blade electric fans to Flex-a-fit radiator and pull air through the entire surface of the radiator with the fan. Shrouds help cooling greatly compared to mounting a fan without a shroud. These shrouds are made of aluminum and are machined to accept a a Flex-a-lite S-Blade electric fan.Features Include: