Anolon Commercial Bakeware 14-by-16-Inch Cookie Sheet, Set of 2 Set of 2 cookie sheets made of heavy-gauge aluminized steel for even heating Folded construction provides added warp-resistance and reliable, level baking Shallow lip around the edge makes the pans suitable for roasting vegetables Hand wash with mild cleanser; oven-safe to 500 degrees F Measures 14 by 16 inches; limited lifetime warranty