Presentation boards are tri-fold, single wall corrugated display boards used for projects, booths, science fairs and all types of displays. All boards are either White or colored on the front side and Natural Kraft on the back. Board size 48quot; x 36quot; folds to 24quot; x 36quot;. Presentation Board Headers are a corrugated header with slots for use on regular and heavyweight presentation boards. Recyclable.