Make large batches of cookies and bars with this extra large sheet pan Our top-rated Naturals®Bakeware collection is made of pure aluminum for superior heat conductivity and produces consistent evenly browned baked goods every time. These premium pans have a lifetime durability and will never rust. Encapsulated galvanized steel rims prevent warping. Creativity meets natural aluminum sustainability.. Lifetime warranty. Cooking Surface: L: 19.5 in. W: 13.5 in. H: 1.0 in. Made in U.S.A.