1/8" White Foam Board | Shop 1/8" Ultra Thin White Board in Pre-Cut Sizes at Foamboards
3/16" Color Foam Core Boards : 40 X 60 - BOXFORLESS.COM
ELMERS Foam Board, White Surface with White Core, 30 X40, 25 Boards/Carton (950510) - Walmart.com
White Foam Board (Standard Sizes) - Columbia Omni Studio
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
40" x 60" Precoated 3/16" FoamCore (25 sheets)
White Foam Board - 40" x 60" x 1/2", Pkg of 12 | Michaels