The opening size is 17.5"x29.5" for 18x30 photos or prints.
The mats are bevel cut.
Our acid-free white core mat boards are a 4-ply paper mat 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.
It is great for crafts, art exhibits, and school projects.
Free Shipping for this item only in the continental US. For PR, Alaska, and Hawaii, please email us first.