Designed for Commercial Kitchen Ovens 18' x 26' Full-Size Pans Will Not Fit a Standard Kitchen Oven 18-Gauge, Natural Aluminum Superior Heat Distribution for Quick and Even Heating and Cooking 1' Rolled-Rimmed Edges with Galvanized Embedded Wire to Reinforce Baking Sheet Baking Sheets Offer Superior Strength, Safe Handling, and Resist Warping Stackable Design for Easy Storage Can Withstand High Heat, up to 500 Degrees Fahrenheit Perfect Size to Accommodate Commercial Bakery Racks Hand wash pans with warm, soapy water and dry completely to protect the shiny aluminum finish Do not use metal scour pads or sharp utensils on your pans to keep your baking sheet pans in everlasting condition after use.