PROCOOL SX480 / 2U Silent Rack Mount Fan/Airflow = INTAKE/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 = 128 CFM (INTAKE) Noise = 20 dBA 2 Year Warranty - Built by hand in the USA