The opening size is 17.5"x23.5" for 18x24 print + backing board
The mats are beveled cut.
Our acid-free whitecore matboards are a 4-ply papermat that provide the aesthetic and design benefits of a bright white bevel with 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.
Quantity 1 = 10 mats and 10 backing.
