Expanded PVC Foam Board, White, 1/32" (0.078", 2 MM) Thick, 12" w x 12" L (Pack of 8): Amazon.com: Industrial & Scientific
Ghostline, Grid Line Foam Core Board, 22 x 28 Inches, White, 1 Piece | Mardel | 3443736
1/2" Foam Board - Irvine Printing & Displays
1.5-in x 4-ft x 8-ft Expanded Polystyrene Board Insulation in the Board Insulation department at Lowes.com
Owens Corning Pink Foam Insulation Board 1/2" Thick (12 Pieces-1sqft Each) Foamular Boards for Craft or Home Improvements Projects Such As Window, Wall, Ceiling Coverings. Packed by Eagle Electronics - Amazon.com
30 x 40 x 1/2 White Foam Board 25 pack | Pittman
Owens Corning FOAMULAR 150 1-1/2 in. x 4 ft. x 8 ft. R-7.5 Scored Squared Edge Rigid Foam Board Insulation Sheathing 88WD - The Home Depot
Amazon.com: Foam Boards White Foam Core Backing Boards, Silver Craft Knife with Protective Cap and 12 Inch Stainless Steel Ruler for Art Presentations Crafts Display Favors(White, Silver, 12 x 10 x 0.2