EATEX HALF SHEET PAN, SET OF 4: Whip up your favorite baked goods with our durable, rust-proof, aluminum half sheet baking pans, oven safe up to 450F. Half sheet cake pan: 18" x 13" x 1". Baking surface: 17.32" x 12.59".COOKIE SHEETS FOR BAKING: Light-colored aluminum sheet pans for baking heat up quickly, browning food evenly without overbaking it. Aluminum baking pans also cool down quickly, reducing wait time between batches. GALVANIZED STEEL RIM: The raised rim of our cookie sheet pan is reinforced with encapsulated steel wire to add strength and prevent warping. NATURALLY LOW-STICK: Our sheet pans for baking don't have a nonstick coating, making them BPA, PTFE, and PFOA free. To reduce sticking, line pans with silicone baking mats or parchment paper, or grease pans before cooking. HAND WASH RECOMMENDED: Aluminum baking pan is reactive to acidic ingredients like vinegar and tomatoes, which can cause pitting or corrosion. Use nylon, wood or silicone utensils to avoid scratching the baking sheet pan.