Our acid-free blackcore matboards are a 4-ply papermat that provide the aesthetic and design benefits of a dark bevel to accentuate contrasts in color and shading while providing bordering to any picture or photo.
The opening size is 16.5"x21.5" for 17x22 print.
Each sheet of mat board has a richly colored front surface and a black core.
It can be used for matting photos, art, and needlepoint. Also great for crafts, backboards, signs, children's projects, and school projects.
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