Pack of 25 11x14 Metallic Gold Picture Mats Mattes with White Core Bevel Cut for 8x10 Photo + Backing + Bags Pack of 25 11x14 Metallic Gold Picture Mats Mattes with White Core Bevel Cut for 8x10 Photo + Backing + Bags This item comes with 25 single mats, 25 backing, and 25 bags The opening size is 7.5"x9.5" for 8x10 print. The mats are beveled cut with white core and 4-ply thick (about 1.4 mm or 1/16 inch). The re-sealable adhesive strip of the clear bag is below the opening of the bag instead of on the flap.