Focus Foodservice Commercial Bakeware 23 Gauge Glazed Finish Aluminum Sheet Pan, 1/4 Sheet Heavy duty commercial bakeware; quarter sheet pan 23 gauge glazed finish aluminized steel provides for easy release of baked goods;superior strength,even heat distribution Pan measures 9-1/2 by 13 by 1-inch Concave bottoms flatten during heating; reinforcing rods keep pans straight during baking Season pan prior to first use; wipe to clean; if needed, wash with cold water, mild soap and dry immediately