Typical exterior dimensions for a half sheet tray are about 17.9 × 12.9 × 1 inches; interior dimensions are often around 16.5 × 11.38 × 1 inches on some commercial-style pans. Actual sizes can vary by model.
Many half sheet trays use heavy-gauge or reinforced aluminum for stiffness and an encapsulated galvanized or steel rim to strengthen the edges. These features increase edge rigidity and help prevent warping under high heat and heavy use.
Hand washing is recommended to preserve the finish. Avoid using the dishwasher when possible, as automatic detergent can cause cosmetic discoloration, and do not use abrasive cleaners on nonstick grids to protect the coating.
Embossed or textured grid patterns add structural rigidity and raise food slightly, which improves air and heat circulation for better crisping and more even browning.
Half sheet trays are typically made from aluminum. Common options are uncoated natural aluminum and premium aluminum with an interior nonstick silicone coating.
Ratings vary by finish: uncoated natural aluminum half sheets are often rated to 500°F; nonstick-coated pans are commonly rated to 425°F; removable nonstick steel grids are typically rated about 400–425°F depending on the set.
Product listings commonly show a Lifetime or Lifetime Limited Warranty. Warranty terms vary by product, so check the specific product details for exact coverage and conditions.
