32 x 40 3/16 Acid Free White Foam | Case Pack of 25

Acid Free foam board protects and preserves artwork, photographs, certificates, maps, and documents. The smooth, bright white surface has a slightly glossy finish that easily accepts markers, crayons, paints, and adhesives. Will not become weak, brittle, or yellow with age and is pH neutral. Lightweight and rigid, foam board cuts easily with a knife or razor. Boards measure 32" x 40" with 3/16" (5mm) thick, dense white polystyrene foam core and white on back of sheet.