Foam Core Backing Board 3/8" White 24x36- 25 Pack. Many Sizes Available. Acid Free Buffered Craft Poster Board for Signs, Presentations, School, Office and Art Projects - Walmart.com
Kingspan GreenGuard 3" x 4' x 8' Square Edge Foam Board Insulation - XPS Supply
Foam Core Backing Board 3/8" White 24x36- 25 Pack. Many Sizes Available. Acid Free Buffered Craft Poster Board for Signs, Presentations, School, Office and Art Projects - Walmart.com
EPS Recycled Foam - 48" x 3 3/8" x 2 1/4", 1#, White | Tarheel Paper Company
Owens Corning FOAMULAR 1/2 in. x 4 ft. x 8 ft. R-3 Square Edge Rigid Foam Board Insulation Sheathing 36L - The Home Depot | Foam insulation board, Insulation board, Polystyrene insulation
Amazon.com : Foam Core Backing Board 3/8" White 24x48-5 Pack. Many Sizes Available. Acid Free Buffered Craft Poster Board for Signs, Presentations, School, Office and Art Projects : Office Products
Foam Board Insulation .59 in x 4 ft x 8 ft R-3 EPS ProBoard Red
Elmer's 3/8'' Cork Foam Board, 16'' X 20'', 2 pk. - The Art Store/Commercial Art Supply