Review on Maximize Your Retail Display With Our 2' X 6' Metal Grid Panel - 3 Pack (Black) by Kevin Tompkins

These serve perfectly for convention/display walls. They accept a variety of hooks/hangers (available from the same source) and are sturdy enough to stand without supports if you connect the panels with joining clips and arrange them at angles to one another. They also fold up into a neat stack without needing to remove the joining clips, and are lightweight enough that I can carry them by myself.