Increases airflow inside wall-mount rack enclosures to keep equipment cool, boost system performance and avoid costly downtime. Cools rack equipment to boost system performance and avoid costly downtime High-performance 5 in. 230V fans draw warm air up through rack at 210 CFM 50 dB sound rating ensures quiet operation-about as loud as your refrigerator Includes hardware for mounting inside or outside standard 19 in. rack cabinets 3 ft. power cord with C14 input connects to conveniently located AC outlet