Get straight lines every time with Ghostline patented display boards by Carolina Pad. Ghostline products are great for students of all ages. The Ghostline Foam Display Board has faint grid lines for guidance which seem to disappear at a distance, allowing you to keep science, math, history, or other projects neat and professional looking. Teachers will love the Ghostline boards - they make perfect teaching aids, student progress charts, and customized calendars, maps, and graphs. The 22 x 28 inch display board is 22 x 14 inches when folded, and is made of durable white trifold foam core board. Carolina Pad - everyday products, extraordinary design.