Entire body is constructed of cast aluminum, up to 1 1/4" thick, for superior durability to last a lifetime, Cast molded exhaust cap for precise heat control without the usual risk of falling off or breaking, 20-inch diameter stainless steel hex shaped cooking surface provides exceptional heat retention and beautiful sear marks, Pre-installed lid hinge with lift assist allows for easy opening, Hinged cooking surface allows for the convenient addition of wood or charcoal without removing the cooking surface