Check the listing for details. Chicago Metallic 40698 Sheet Pan, 18"x26", Stay Flat. Condition: New. Listed at 49.65 USD. Our eBay Store Contact Us Add to Favorite Sellers Chicago Metallic 40698 Sheet Pan, 18"x26", Stay Flat This 16 gauge aluminum bun pan features an AMERICOAT glaze for a convenient nonstick cooking surface. The pan's StayFlat technology increases the strength and longevity of the product. The bun pan features sidewalls that are continuously reinforced with a horizontally engineered rib to improve its strength up to 30%. Plus, it is made using a manufacturing method that creates a residual tensile stress in the underside to prevent bowing or denting. The bun pan also has a slightly concave bottom that will flatten during heating to ensure even heat distribution. 16 Gauge aluminum for durability AMERICOAT glaze ensures easy release Sides are reinforced to avoid flaring Residual tensile adds stength to prevent bowing or denting Slightly concave bottom flattens during heating for even heat distribution Customer Satisfaction Guaranteed!