Grill Dome GE-L Grill Extender, Large Grill extender adds additional 177 square inches of cooking surface to 18-inch-diameter grill Heavy-duty 1/4-inch-diameter (7mm) wire cooking rods with porcelain-coated surface Ideal for use with a Grill Dome Infinity series kamado grill Dishwasher-safe for quick cleanup; 4 different sizes available