This foamboard contains a special adhesive covering on one side of its clay-coated surface, allowing for an ultra-smooth, strong permanent bond when heated. The dry adhesive stays clean, melts evenly and allows pencil marks. A non-stick inter-leaving sheet is supplied as added protection for the artwork during the mounting process. It is ideal for posters, digital photos and prints. Each sheet is 3/16" thick and measures 32" x 40".