The Handi-Foil 2063HDL plastic high dome lid is rectangular and disposable and can be used with a Handi-Foil 2063 1/2-size sheet cake pan to hold, carry, and serve a sheet cake. The lid is made of plastic, which resists impacts and punctures. The transparency of the plastic allows the food inside the pan to be viewed at a glance. The top of the lid measures 18-1/32 x 13-7/32 inches (L x W) on the outside. (L is length, the horizontal distance from front to back; W is width, the horizontal distance from left to right.) The lid has a vertical depth of 2".Handi-Foil manufactures disposable aluminum foil pans, containers, and other products for the food service industry. The company, founded 1958, is headquartered in Wheeling, IL.