Amazon.com : Ctosree 48 Pcs White Foam Board 24 x 36 Inch Foam Core Boards Foam Poster Board Bulk 3/16 Inch Thick Foam Core Baking Board Mat Foam Sheets for Craft Art
FoamCore Sheet 4' x 8' – Blue Ridge Sign Supply Inc
Foam Core 4'x8' Sheet
20Pack Foam Core Board, 11'x15' White Foam Board, 3/16' / 5MM Thick Mat Board Ce | eBay
3/8" White Acid Free Buffered Foam Core Boards : 48 X 48 - BOXFORLESS.COM
25 - 6x8 Foam Core 3/16" Thick 6" x 8" White Foamcore Foam Board Framing Art | eBay