Strong aluminum construction. Dimensions: 16.25L x 14W x 1.25H in.. Oven-safe design. Raised ridge for easy handling. Rounded corners. The T-fal Airbake Aluminum All Size Cookie Sheet - Set of 3 lets you cycle batches of cookies into the oven, making this set ideal for baking large amounts for those birthday parties or school bakesales. The lightweight aluminum designs feature a raised edge to provide a comfortable grip.