Make your Science Fair and other school projects a breeze with our durable and sturdy tri-fold presentation boards and headers. Add Pacon Reusable, Self-Adhesive Letters and Trimmers for a beautifully finished and professional look. Presentation Board Headers are corrugated headers with slots to fit on top of Pacon Presentation Boards. These headers are White on the front side and Natural Kraft on the back. Each header measures 36"W x 9-1/2"H. Recyclable.