Amazon.com : CreGear Foam Board 16 x 20 x 3/16", 15 Pack White Poster Board Lightweight Signboard Foamboard for Crafts, Framing, Art, Display, Presentation : Office Products
3/16" Black 1 Side Self Adhesive Foam Core Boards :16 X 20
Elmer's 3pk 16" x 20" Foam Presentation Boards - White
16x20 Foam Board 3/16"
16" x 20" Black Foam Boards, 3ct. | Michaels
Mat Board Center, Pack of 10 1/8" White Foam Core Backing Boards (16x20, White)
15 Pack Foam Board 16"x20"x3/16", White Foam Board with Hard Paper Outer, Foam Core Baking Board for Project, Acid Free Sign Board Poster Board for ...
White Foam Board - 16" x 20" x 3/16", Pkg of 3 Sheets
Foam Core Backing Board 3/16" Black 16x20- 100 Pack. Many Sizes Available. Acid Free Buffered Craft Poster Board for Signs, Presentations, School, ...