Price history on Walmart.com for
Elmer's CFC-Free Polystyrene Foam Board, 30 x 20, Graystone 10 PackSee on Walmart
Colored foam board is ideal for constructing models, creating signs or backdrops for presentations and exhibits. Colored surface accepts markers and can be screen printed or painted. White 3/16" polystyrene core is CFC-free and cuts cleanly with an X-ACTO knife (sold separately.).... read more.