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Crescent Afx Acid Free White Mounting Board
Preserving Memories Since 1902 This single .050" thick board is a standard with professional artists the world over. It features two usable sides, both smooth and easy to mount on. The entire product is acid-free including both surface sheets and the core. Please note: 32×40" sheets are sold only…

ViewPoint Acid Free Foam Core Backing Boards
…without damage. Why use Acid-Free backing boards? Acid free paper can last more than 1000 years and is used in situations where art or documents require a longer life without becoming yellow or breaking down. Highly durable and, because it is acid free, it will not become hard or brittle with age.…

