JEGS Low Profile Heavy Duty Electric Fans are the thinnest high performance reversible fans on the market. Made from durable glass-filled nylon and use high output 225 watt motors (except where noted). The S-Shaped blades are quiet and durable. Fans motor must be mounted using brackets since this motor is too heavy to be mounted on the radiator core (do not use with nylon ties that go through the radiator core).