TREND enterprises, Inc. Graphing Grid (Large Squares) Wipe-Off Chart, 17" x 22" Graph, list, classify, and map information with this handy dry-erase chart. Handy size can be easily viewed from a distance. Useful in large rooms and with small groups. Extra Value: reproducible activities on chart back. Durable cardstock. 17" x 22". Stores easily in chart- or bulletin board-size File 'n Save Box.