50 Pcs of 11x14 Mats Mattes Matting for 8x10 + Backing + Bags 50 pcs of 11x14 Mats Mattes Matting for 8x10 + backing + bags FREE SHIP The mats are cutted at beveled. The opening size is 7.5"x9.5" for 8x10 print. The backing is also 4-ply. The re-sealable adhesive strip of the clear bag is below the opening of the bag instead of on the flap.