Fat Daddio's Sheet Cake Pan is made with 14-gauge anodized aluminium.The completely seamless square-bake design means Fat Daddio's cake pans and baking pans have no seams or weld lines often found in other pans.Anodizing completely seals the aluminium, making a smooth scratch-resistant surface, and ensures there is no cross-contamination or leaching of aluminium into foods.Anodized aluminium is also non-reactive with acidic and dairy ingredients.Fat Daddio's anodized aluminium bakeware, baking pans and cake pans are precision engineered to offer excellent baking performance, even heat distribution, and durability.Bake your best with Fat Daddio's bakeware.Dishwasher safe.