Another common approach is to use banner poles or dowel rods. With this approach the graphic has to have a pocket at the top and bottom for the banner pole to slide into and then is hung via a string or wire of some sort. If the width is narrow (only a couple feet) then dowel rods work fine. If the width is 4 feet or wider, then I recommend a more substantial banner pole approach. The wider the graphic gets, the more it will tend do sag in the middle if a lesser strength pole is used. I hope this helps. You can see more examples by clicking here