Nice, heavy duty pans great for baking up a batch of cookies or very thin cake layers as with our alphabet cake.
(Amazon Description): Bakers Half Sheet natural aluminum commercial bakeware is made of pure aluminum which will never rust for a lifetime of durability--- Baked goods rise and bake evenly due to aluminums superior heat conductivity and the reinforced encapsulated steel rim prevents warping--- Pan exterior dimensions 17.88 x 12.88 x 1.06 inches and interior dimensions 16.5 x 11.38 x 1 inches. The corner of the pan has tooling marks that are part of the production process and will be present on all pans--- Easy clean up, hand wash only. The Nordic Ware Bakers Half-Sheet is ideal for baking, roasting, toasting, and warming. Versatile rimmed baking sheet is perfect for cookies and more--- Proudly made in the USA by Nordic Ware.