Cookie Sheet Trio Accommodates All Cookie Needs. This trio of cookie sheets in small, medium and large sizes accommodates all your baking needs. Good Cook Non-Stick Cookie Sheets: Set of three. Heavy duty easy-clean non-stick coating. Set includes small, medium and large cookie sheets. Ideal for cookies. Dimensions: Measures 19 in. x 12 in. x 1 in. A Closer Look: Having a variety of sizes and more than one of each can give you the versatility needed to bake cookies, roast vegetables, heat dinner rolls or flaky puff pastry. Take Care: Dishwasher safe. Wash with warm water before first use.