Pack of 100 8x10 Dark Gray Picture Mats Mattes with White Core Bevel Cut for 5x7 Photo Pack of 100 8x10 Dark Gray Picture Mats Mattes with White Core Bevel Cut for 5x7 Photo This item comes with 100 single mats The opening size is 4.5"x6.5" for 5x7 print. The mats are beveled cut with white core and 4-ply thick (about 1.4 mm or 1/16 inch). THIS ITEM DOES NOT INCLUDE BACKING BOARDS OR CLEAR BAGS.