Constructed from 1-ply corrugated fiberboard with side panels that meet in the middle. The smooth white surface has a matte finish that easily accepts markers, crayons, paints and adhesives. Back of board is brown kraft. Measures 36" high x 48" wide overall—side panels measure 36" high x 12" wide and the center panel measures 36" high x 24" wide. Set of 24.