12 volt high quality radiator cooling fan. The fan runs on ball bearings for long life; the motor is dynamically balanced and the blades shaped to make this a quiet running fan. The fan is approximately 340mm wide x 318mm high x 71mm deep including the casing. The fan blades are approximately 12″ (280mm). It consumes less than 8 amps when running (The starting amperage is much higher, so a 30 amp fuse is advisable). The fanshould be mounted in front the radiator. Unless this is a replacement for an electric fan, you may need a thermostatic switch. This fan is suitable for engines 2000cc and over.