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Amazon.com: Mat Board Center, Pack of 25 Foam Core Backing Boards 1/8" (11x14, White) : Office Products
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Foam Core Backing Board 3/8" White 18x24- 25 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 3/8" White 18x24- 25 Pack. Many Sizes Available. Acid Free Buffered Craft Poster Board for Signs, Presentations, School, Office and Art Projects - Walmart.com
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