The Sigma RS Frame and Bracket kit is a required component in creating a Sigma POD Shelf display. The frame creates standards at every 12" at the back of the case allowing for 1 foot and 2 foot POD shelves to be arranged in a staggered layout. The RS Frame allows for a waterfall look and feel using the same depth shelves from top to bottom. The frame can also accept CTM Shelves. The frame itself is universal and fits most major manufacturers' cases, restricted only by the overall height of the case.