These boards offer a heavy duty 3/16" thick Ryno foam board that resists bowing and is stronger than regular Foam Board. The heat activated mounting adhesive on the boards are safe for all inkjet and other prints.
Ryno Boards use a denser polystyrene core with SBS paper board surfaces. SBS is the same material used to make lightweight packaging such as toothpaste boxes and more. The SBS is stronger than the coated papers to make standard foam board and resists dents and warping better than standard foam board.