Quartet Magnetic Dry-Erase Boards, Tin Square, 11.5 x 11.5 Inches, White (TSQ1212-WTS) Dry-erase board; magnetic; 11.5" x 11.5" squares Mix and match - squares are modular to be used individually or as part of a unit; mount in any orientation with included adhesive tape Mini dry-erase marker and magnet accessory included; frameless, magnetic dry-erase board square is stylish and easy to clean