Whitecore: Our acid-free whitecore matboards are a 4-ply papermat that provide the aesthetic and design benefits of a bright white bevel. Each sheet of mat board has a richly colored front surface, a white core and a white backing. It can be used for matting photos, art, and needlepoint. Also great for crafts, backboards, signs, children's projects, and school projects. 4-ply over 4-ply. Aperture sizes: 3.5"x5.5" fits 4x6 print or photo.

The double mat is glued together.

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