Natural aluminium Big Sheet fits a dozen more cookies than a Half sheet and still fits all standard ovens. Make mega batches of cookies and bars with this extra large sheet pan. Fits most standard size ovens. 35 percent larger surface than the half sheet! Our commercial-duty Naturals Bakeware is made of even-heating, rust-proof aluminium and features a galvanized steel encapsulated reinforcement around the rims for added strength. Bakers agree that aluminium bakes and browns best. Whether you're cooking sweet or savoury foods or even sheet pan meals, this pan feeds a crowd and allows you to cook more food in less time.