Foamcore is a 4.8mm (1/4in) thick Paper-faced foam board.
Gatorboard is 4.8mm (1/4in) or 12.7mm (1/2in) thick Wood-Veneer-faced foam board. It is similar to foamcore but has added strength due to the veneer on the outside instead of paper like foamcore. Available in white or black foam interior (currently available by request only).