Nordic Ware 3pc Prism Aluminum Baking Sheet Set, 9x13, Quarter Sheet, and Lid

Nordic Ware 3pc Prism Aluminum Baking Sheet Set, 9x13, Quarter Sheet, and Lid: Exterior dimensions: 9x13: 9.5" x 12.9" x 2.5" , Quarter Sheet: 6.9" x 13" x 1.1", Lid: 9.8" x 13.6" x 1.1" Pan Material: Natural Aluminum, Lid: BPA and melamine free plastic Natural aluminum is a superior heat conductor for even heating, baking and browning  Prism texture for air flow Color: Silver, clear lid Lid fits 9x13 pan and quarter sheet Hand wash in warm soapy water Dishwasher use is not advised, as discoloration will occur due to the cleaning agents used in automatic dishwasher detergent, which is merely cosmetic not affecting baking properties or safety of the pan Nylon, wood, or silicone utensils are recommended Metal utensils and scouring pads may scratch natural aluminum pans, but will not affect baking performance