Art Alternatives Super Value Wood Panel packs are a versatile and creative way to take your artwork to a new level. Works for traditional painting and drawing, but also can withstand heavy media applications. Smooth surface is great for detailed work or mounting. Rigid enough for impasto, mixed media, collage, encaustic, and general craft use. MDF core, double sided with a birch veneer. Panels measure 4 x 4 inches - 5mm depth - pack of 10.