PROCOOL SX280-E / 2U Silent Rack Mount Fan/Airflow = EXHAUST/Home Theater AV Cabinet Cooling Broadcast Network Server Recording Studio Rack Mount Fan Panel 19" 2U 2 rack spaces - 19" x 3.5" x 2.5" Silent Fans with advanced blade design can produce good airflow without noise Airflow = 64 CFM (EXHAUST) Noise = 17 dBA 2 Year Warranty - Built by hand in the USA