10 of 18x24 White Pre-cut Acid-free whitecore mat for 13x19 + back+bag<div style="text-align: left;"><strong>[Product Information]</strong><ul><li id="replacementPartsFitmentBullet" class="aok-hidden" data-doesntfitmessage="We're not sure this item fits your " data-fitsmessage="This fits your "><span class="a-list-item"><span id="replacementPartsFitmentBulletInner"><a href="#" class="a-link-normal hsx-rpp-fitment-focus">Enter your model number</a>to make sure this fits.</span></span></li><li><span class="a-list-item"> 10 of 18x24 White Pre-cut Acid-free whitecore mat for 13x19 + back+bag </span></li><li><span class="a-list-item"> This item comes with 10 single mats， 10 backing， and 10 bags. </span></li><li><span class="a-list-item"> The opening size is 12.5"x18.5" for 13x19 print + backing board + clear bag </span></li><li><span class="a-list-item"> The mats are beveled cut with white core and 4-ply thick (about 1.4 mm or 1/16 inch). </span></li></ul></div><img src="http://ecx.images-amazon.com/images/I/41apeD307jL.jpg" noproxy>