Signature 181AS Baking Sheet, Half, Gray QUALITY CONSTRUCTION: Elements premium bakeware is made of a heavy-duty, commercial-weight steel, which heats evenly across the pan for optimal baking results. STANDARD SIZING: The Elements Premium Aluminized Steel Half Sheet Pan measures 12.5 by 17.3, so its perfect for cookies, sheet cakes, jelly rolls, sheet pan dinners and much more. NO WARPING: Reinforced steel rims prevent warping and make it easy to safely remove the pan from the oven. UNCOATED DESIGN: Our aluminized steel sheet pan comes uncoated, making it the ideal choice for those looking to bake on natural surfaces. MADE IN AMERICA: The Elements sheet pan is proudly made in the USA. For best results, hand wash and dry thoroughly.