Foam Core Backing Board 3/8" White 32x40- 100 Pack. Many Sizes Available. Acid Free Buffered Craft Poster Board for Signs, Presentations, School, Office and Art Projects - Walmart.com
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Foam Core Backing Board 3/16" White 1 Side Self Adhesive 8.5x11- 250 Pack. Many Sizes Available. Acid Free Buffered Craft Poster Board for Signs, Presentations, School, Office and Art Projects - Walmart.com