The plenum-approved Evolution Series Ceiling Box provides a compact design, with a hidden place for the needed active equipment. These boxes are perfect for smaller spaces like conference rooms and education facilities where racks will not fit. Fully finished enclosure designed to manage and store A/V equipment in an air handling plenum space above a false ceiling. This box is equipped with dry contact controlled receptacles that can be switched off when not in use and has a built in fan to keep the temperature of the equipment cool.