Chefwiz Non-stick Baking Mat Set, 16 1/2''x11 5/8'' Easy and hassle-free clean up each time you use Chefwiz baking mats. Bake with any desired temperature reaching up to 450 degrees F or 232 degrees C. FDA approved everyone can feel safe using Chefwiz baking mats. Made with durability which will be everlasting. Chefwiz baking mats dimensions are 11-5/8" x 16-1/2" and a perfect fit for your 13" x 18" pan.