Easily the most common size for a rectangular baking pan is the 13 x 9.Cuisinart Chefs Classic bakeware probably the best bang for the buck bakeware line in the market. The Cuisinart Chefs Classic bakeware line is constructed of heavy-gauge aluminized steel for good heat distribution and consistent results. The rolled edges help prevent warping. The nonstick exterior and interior insures easy release of your creations and easy cleanup. Even easier, the entire line is dishwasher safe! Striking two tone stylingDouble coat of Whitford Xylan nonstick coatingLimited lifetime warranty from Cuisinart