This bakeware set includes two useful items to have in the kitchen. Baker's half sheet is a true kitchen must-have, this is our most popular Naturals piece. Baker's quarter sheet is great for brownies and small batches of cookies. Naturals® baking pans from pure uncoated aluminum which conducts heat rapidly and evenly, resulting in beautifully browned foods no matter what’s on the menu. Uncoated aluminum is free of chemicals and coatings for healthy baking and is safe for use under the broiler. Once you bake with them, you’ll understand why pure aluminum bakeware continues to be an indispensable classic in both professional and home kitchens alike. Half sheet pan exterior dimensions 17.9 x 12.9 x 1 and a cooking surface of 17.1 x 12.1 inches. Quarter sheet pan exterior dimension 13 x 9.6 x 1.1 inches and a cooking surface 12.1 x 8.8 inches. 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.