3/16" Color Foam Core Boards : 40 X 60 - BOXFORLESS.COM
Amazon.com : Union Premium Foam Board 30 x 40 x 3/16" 10-Pack : Matte Finish High-Density Professional Use, Perfect for Presentations, Signboards, Arts and Crafts, Framing, Display (White, 30x40) : Office Products
Wholesale 40" x 60" White Foam Core Board | Curbside Pickup Only
3A White Foamcore 40 x 60 | foamcore.com
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Foamboard 40" x 60", 1/2" thick, White
White Foam Board - 40" x 60" x 1/2", Pkg of 12 | Michaels