Wilton Perfect Results Non-Stick Mega Large Cookie Pan, 15 x 21-Inch Bake large batches of cookies, appetizers or other foods with this large size cookie pan and baking sheet Made of steel; non-stick coating for easy release and quick cleanup 15 x 21 in. (38.1 x 53.3 cm) Limited 10-year warranty Dishwasher safe; however for best results, wash in warm, soapy water before first and after each use