32 x 40 inch (81.3 x 101.6 cm) foamboard, 3/16ths inch (4.8 mm) thick, clay-coated BLACK board on both sides, with black foam core. Each sheet has a peel-and-stick LOW-TACK repositionable adhesive for clean, easy mounting of photos, artwork, etc. Adhesive becomes permanent 12-24 hours after mounting your material. Some heavy, glossy, or rolled items may need to be weighted for 12-24 hours while the adhesive cures. 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.) This item qualifies for FREE SHIPPING in lower 48 US states only. Made in USA.