By adding additional cooling to a compressor the duty cycle can be increased up to 25%, especially if your compressors are mounted in a trunk, etc. Kits are offered in two different bracket sizes fitting a variety of compressors. The fan is IP68 rated and is available in 12-Volt and 24-Volt variants. Heavy Duty Vibration Isolators absorb the vibration resulting in quieter compressor operation. 4 vibration isolators included.