What is Foam Core Board? Everything You Need to Know
Foam Core Backing Board 3/16" Black 12x24- 5 Pack. Many Sizes Available. Acid Free Buffered Craft Poster Board for Signs, Presentations, School, Office and Art Projects - Walmart.com
20" x 30" Foam Board, 1/2" Thick | Michaels
Amazon.com : AKOLAFE 30 Pack 10x8 Inch Foam Boards, 5 mm Thick Foam Core Board 1/5 Inch Black Foam Sheet, Black Polystyrene Poster Board Signboard for Presentations, School, Office & Art Projects : Office Products