The double sided chalkboard is made from a quality wood for an attractive appearance. This oak frame is 3/4" x 7/8" (D x W) with a protective lacquer coating. The double sided chalkboard has a writing surface that measures 18" x 25" this area is large enough for any message. This write on board can be used either vertically or horizontally to work on the wall or with one of our many easels. The double sided chalkboard is extremely useful since the sign can be changed quickly just by wiping it with a damp cloth.