Quarter Sheet Cake Pan The professionals' Bakers choice for cakes and confections. These commercial-quality pans are made in the USA from a heavy 14-gauge hard aluminum and feature perfectly straight sides. The square corners are essential for professional results. Magic Line pans are covered under a lifetime guarantee against rusting, chipping, flaking, warping, and more! Magic Line Bakeware rectangle pans Made In the USA. 9 x 13 x 3