20″x30″ Gray/Charcoal Foam Board, 2 Cool Colors, 5/Case 27142.
A different color on each side, double the use, half the space.
Buy Two Cool® Colors Royal Brites® Foam Board 20″x30″, 5 sheets/pk, made in the USA.
Buy foam board by the case and save! Great for science fair, school, home and office projects.