Equip your kitchen with 3 pans you'll always need. The 3 Piece Baking Sheet & Pan Set comes with an 18x14" cookie sheet pan, a Quarter Size Cookie Pan, and a Half Size Cookie Pan. These pans are made of Aluminized Steel and have a fluted surface for even baking. Hand wash them because the dishwasher can ruin the aluminum. The maximum temperature for these pans in 450 F.