Our top-rated Naturals® Bakeware collection is made of pure aluminum for superior heat conductivity and produces consistent evenly browned baked goods every time. Full sheets are made for commercial oven use and do not fit in standard home ovens, be sure to measure your oven. Individual pan dimensions: Interior 17.3 x 25.3 x 1 inches and Exterior 18 x 26 x 1 inches. These premium pans have a lifetime durability and will never rust. Encapsulated galvanized steel rims prevent warping. Creativity meets natural aluminum sustainability. For baked veggies, French fries, muffins, cookies, cakes and more. Whether you're cooking sweet or savory foods, bakers agree that aluminum bakes and browns best. Use and care: Before initial use and after subsequent uses, hand wash with warm, soapy water. Dishwasher use is not advised, as discoloration will occur due to the cleaning agents used in automatic dishwasher detergent. This discoloration is merely cosmetic and will not affect baking properties or safety of the pan. Natural aluminum pans work well with parchment paper, silicone baking mats, and also traditional butter or shortening and flour methods. When roasting savory foods such as vegetables, butter or cooking oil work well. Nylon, wood, or silicone utensils are recommended. Metal utensils and scouring pads may scratch natural aluminum pans, but will not affect baking performance. Aluminum is reactive to acidic ingredients such as vinegar and tomato products. These foods may darken, pit or corrode the pan after prolonged use. Made in America of domestic and imported materials. Our aluminum bakeware-quality pieces are made to withstand a lifetime of use in your home kitchen.