Golden State Art, Pack of 10 8x10 BLACK Picture Mats with White Core Bevel Cut for 5x7 Pictures Pack of 10 8x10 Black Picture Mats with White Core Bevel Cut for 5x7 Pictures This item comes with 10 8x10 single mats ONLY. Backing board is NOT included. Inside (opening) Size: 4.5x6.5 (bevel cut), Color is Black White core and 4-ply thick (about 1.4 mm or 1/16 inch). Perfect for framing 5x7 photos in an 8x10 picture frame. Please Unwrap the plastic wrap & Flip the first mat over to see the actual color mat.