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Conservation Mats - Black Core

Conservation Black Core mat board is our highest quality, archival grade mat! Made with 100% virgin alpha-cellulose surface, core and backing papers. Acid Free & Lignin Free, conservation quality. Black beveled edge. 4-ply mats, 1/16" thick. Mats are listed by Outside Dimension (Frame Size), not photo size. -- Scroll down to bottom for SQUARE black core photo mats --