Remove heat right at the source. Optimized for components on open shelving, this quiet cooler turns on automatically when satellite/cable boxes, receivers and other heater generating components get too hot. Place the component cooler directly on top of equipment vents. The low-profile unit produces minimal noise and fits beneath most equipment. Rubber discs are included to raise the height of stacked equipment if necessary. Extends equipment life: cools satellite/cable boxes, receivers and other hot-running equipment. Quiet fan performs at 19 dB. Low profile design fits between stacked components. Fan activates automatically. Free Air Rating: 8 CFM