Constructed from 1.2mm high grade stainless steel. Its oversized design gives you more cooking space while its raised frame keeps foods contained within the topper cooking surface. The oversized stainless steel 10mm handles with forged Broil King® logo makes it easy to transport to and from the grill. The raised square perforation holes add to the rigidity of the design and help keep food from sticking. The flat grill topper is dishwasher safe.