Unframed, dryerase board offers a blue XY axis grid on one side and plain dryerase surface on the other Bold lines separate board into quadrants each 14 squares by 10 squares The total grid is 28 squares by 20 squares Individual squares measure 38 x 38 Highquality, dryerase coating will not ghost Board features rounded corners and smooth edges for comfort and safety Durable hardboard backing is warpresistant and chipresistant