This unit finds use in a wide variety of situations, from home theater setups to server and computer network cabinets, to music and DJ equipment racks, and audio-video (AV) subracks. The four high volume cabinet fans pump out 300 CFM of air through a top exhaust, providing a healthy flow stream to keep your setup cool . One-button switch, not easy to malfunction，This keeps your valuable equipment operating at the temperature range of peak performance and is a safety check against overheating.