Everyone needs a 9" x 13" cake pan. Professional pastry chefs and bakeries bake on aluminum for consistently perfect results. You can do the same with our commercial-quality Naturals Bakeware. Made of pure aluminum, these premium pans will never rust or warp, and they produce evenly browned baked goods every time. Naturals commercial bakeware is made of pure aluminum which will never rust for a of durability Foods bake and brown evenly due to aluminum's superior heat conductivity. Reinforced encapsulated steel rim prevents warping and adds strength Compatible with parchment paper or silicone baking mats if desired. Easy clean up; hand wash recommended Pan exterior dimensions 12.9 x 9.5 x 2.5 inches and interior dimensions 12.1 x 8.8 x 2.5 inches