Every year they try to use corrugated plastic in one of their sets. This set they cut each 4×8 sheet in half. They had some that were solid white and some that were clear. Every 4 feet they ran a black steal braided wire from the ceiling to the floor. With the fluting in the corrugated plastic, they ran each wire through the edge and then used a small cable clamp to set the hight spacing. This helped them obtain the look as if each square was floating.