Presentations and projects will be taken to a whole new level with the unique look of a cork project sheet. Lightweight and rigid foam board with a self-healing cork finish cuts easily with a knife or razor. Perfect for mounting photographs and artwork or can be cut to size and framed as a bulletin board! Boards measure 20" x 28" with 3/16" (5mm) thick, dense white polystyrene foam core and white on back of sheet. Pack of 25 sheets. Still located in Cincinnati, OH, we have grown to be the Flipside Family of Products including brands Crestline Products and Hayes Publishing. Our offering includes dry erase boards, presentation boards, chalkboards, answer paddles, project sheets, easels, activity boxes, awards certificates and diplomas, progress reports, graduation supplies, classroom themes, and much more! Display. Organize. Create - Our passion is the manufacturing and distribution of quality educational, office, arts & crafts supplies at affordable prices for use in schools, business, and homes.