Dishwasher use is not advised as discoloration will occur due to the cleaning agents used in automatic dishwasher detergent. This discoloration is merely cosmetic and will not affect baking properties or safety of the pan. All Nordic Ware bakeware is proudly made in the USA to exacting standards, with careful attention to detail in the manufacturing process Natural aluminium: Built to last, this 14" pizza tray is forged with durable aluminium to create the perfect crisp finish time and time again Steel rims: Encapsulated galvanised steel rims help keep your baking pan in tip-top condition and prevent warping 14" Pizza's: Pan accommodates up to a 14-inch pizza's, perfect for sharing