Blackcore Foam Board Pack - 24" x 36" x 3/16", Black, Pkg of 25 | Michaels
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
FOAM CORE 24 inches x 36 inches | 36inches x 24 inches ( 3/16" Thick) - Graphic Impact - Signs, Banners, Engraving and Apparel