Natural aluminum commercial bakeware is made of pure aluminum which will never rust for a lifetime of durabilityBaked goods rise and bake evenly due to aluminums superior heat conductivity and the reinforced encapsulated steel rim prevents warpingEasy clean up, hand wash only.Nylon, wood, or silicone utensils are recommendedPan exterior dimensions 15.63 x 9.63 x 3.25 inches and interior dimensions 13 x 9 x 2.5 inchesProudly made in the USA by Nordic Ware
