10 11x14 8-ply White Picture Mats for 5x7 Photo Picture 10 11x14 8-ply White Picture Mats for 5x7 Photo Picture This item comes with 10 single mats The opening size is 4.5"x6.5" for 5x7 print. The mats are beveled cut with white core and 8-ply thick (about 2.8 mm or 1/8 inch). THIS ITEM DOES NOT INCLUDE BACKING BOARDS OR CLEAR BAGS.