ARU SX / VX FAN BOX 115V 60HZ Densely packed enclosures can overheat IT equipment and cause downtime. High-density enclosures create an environment where traditional air distribution methods are not effective. The Air Removal Unit captures exhaust heat, ducting it to the return air plenum and eliminating hot spots. Through automatic fan speed adjustment based on temperature or power consumption, a desired temperature can be set and fans will self-adjust for optimal energy efficiency. The Rack Air Removal Unit provides fan redundancy in the event of fan failure, and power redundancy through dual corded input. This space saving product mounts to the back of the enclosure - requiring zero U space.