The OXO Nonstick Pro Half Sheet Pan is perfect for large batches of cookies and sheet cakes, staying rigid so your treats stay aboard. The square-rolled edges add reinforcement for structure, strength and durability, and provide a secure grip for easy handling and transferring to and from the oven. Unique micro-textured pattern ensures even baking. Made from ceramic-reinforced, 2-layer coating aluminized steel. Dimensions: 13″ x 17.8″.