Showcase your work with the crisp firm foundation of Elmer s foam core! Elmer s foam boards offer sturdy support for visual presentations with a clean professional appearance. These lightweight sheets provide a rigid surface that is stronger than poster board yet cuts easily with a craft knife. Elmer s foam boards feature a resilient white polystyrene core that bounces back with superior strength. Elmer s foam board is free of toxic chemicals such as chlorofluorocarbons (CFCs) and formaldehyde. Boards measure 3/16 of an inch thick and 24 inches by 36 inches. Sold individually.