Amazon.com: Expanded PVC Sheet – Lightweight Rigid Foam – 6mm (1/4 Inch) – 24 x 48 Inches – White – Ideal for Signage, Displays, and Digital/Screen Printing : Industrial & Scientific
4 pieces 34.5 x 34.5 x 1/2, 2 pieces 34.5 x 16.5 x 1/2 inch
Amazon.com: 8 Pieces 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(12 x 10 x 0.2
Lone Star Materials - 1 in x 4 in x 8 ft EPS Foam Board
R-Tech 1 1/2 in x 48 in. x 8 ft. R-5.78 EPS Rigid Foam Board Insulation 320817 - The Home Depot
1/4" (6.35 mm) Foam Sheet - Woodland Scenics
Buy White 36" x 48" Heavy Duty 1/4" Thick Matte Pouch Laminating Boards - 5pk (MYB62311HD)