9” Rack shelf (black) for use with Just Add Power 2G and 3G transmitters and receivers. Holds up to 13 x 2G, 2G+ or 3G Transmitters or Receivers vertically. When holding up to 13 x 3G devices, takes up a total of 5U high of rack space. Ideal for those large-scale residential and commercial HDMI over IP installations where the majority of Just Add Power hardware is located in a central AV rack.