The standard of the framing industry! 40 x 60 inch (101.6 x 152.4 cm) foamboard, 3/16ths inch (4.8 mm) thick, clay-coated white board on both sides. This is a full case of 25 sheets. Save big by buying in full cases. (At this time, we only sell foam board in case quantities.) Made in USA.THIS ITEM QUALIFIES FOR FREE SHIPPING! Applies to lower 48 US states only.