Quartet Cork Bulletin board, Wood Frame, 4'x10' Simple and recognizable, natural cork bulletin boards offer a practical surface for posting notices and course materials in the classroom. Natural cork’s excellent pin holding power and resealing properties make for a quality long-lasting surface. The hardwood frame is stained and finished with all four corners precision mitered for extra strength. Boards sized 3’ x 4’ and smaller feature v-nail construction, a 1” frame face width, and utilize Quartet’s patented J hook hanging system. Larger sized boards feature clamp-nail construction, a 1 3/4” frame face width, and a heavy-duty L clip installation kit for safe, simple and precise mounting every time.