Quartet Cork Tiles, Natural, 12 x 12 Inch, Frameless, 4 Pack (102) Each frameless tile is 12-inch x 12-inch, 4 pack; natural cork is self-healing for longer lasting use Adhesive tape included for fast and easy hanging in any space; for light use in low traffic work environments 1/4-inch thick cork tiles are modular to create a customized bulletin board that holds push pins tight