100 8x10 Pre-cut Mats White Color Whitecore Fits 4x6 Pictures 100 8x10 Pre-cut Mats White Color Whitecore Fits 4x6 Pictures This item comes with 100 single mats The opening size is 3.5"x5.5" for 4x6 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.