Ideal for presentations and projects that need more space than a standard sheet. The brown kraft surface has a matte finish that easily accepts markers, crayons, paints, and adhesives. Lightweight and rigid, E-Flute corrugated sheet cuts easily with a knife or razor. Perfect for 3-D model building, signs, mounting photographs and artwork, poster making, and more. Back of board is also brown kraft. Boards measure 32" x 40" x 1/8" thick.