Non-stick aluminum construction. 12 wells. Hand-washing recommended. Manufacturer's lifetime warranty. Includes clear plastic lid. The Nordic Ware 45503 Natural Bakeware Aluminum 12 Cup Muffin Pan with Lid is a professional quality muffin pan with heavy cast aluminum construction and a non-stick coating that ensures even cooking and browning for consistently great results. The pan makes 12 individual muffins and features a clear plastic lid for easy storage. Hand washing is recommended and the non-stick coating makes for easy cleanup with soap and hot water. About Nordic Ware. Founded in 1946 Nordic Ware is a family-owned American manufacturer of kitchenware products. From its home office in Minneapolis Minn. Nordic Ware markets an extensive line of quality cookware bakeware microwave and barbecue products. An innovative manufacturer and marketer Nordic Ware is best known for its Bundt Pan. Today there are nearly 60 million Bundt pans in kitchens across America. The Nordic Ware name is associated with the quality dependability and value recognized by millions of homemakers. The company's extensive finishing technology and history of quality innovation and consistency in this highly technical and specialized area makes it a true leader in the industrial coatings industry. Since founding Nordic Ware in 1946 the company has prided itself on providing long-lasting quality products that will be handed down through generations. Its business is firmly rooted in the trust dedication and talent of its employees a commitment to using quality materials and construction a desire to provide excellence in service to customers and never-ending research of consumer needs.