Proudly made in the United States, the Broil King Imperial 470 (956077) natural gas 4-burner built-in gas grill features 675 square inches of total cooking surface with an included porcelain-coated warming rack. Made from die-cast aluminum and high-grade stainless steel, the durable cook box of the Broil King 956077 provides excellent heat retention and long-lasting durability. The cook box is designed to ensure even heat and heat retention for precise cooking control. The Broil King 956077 features dual-sided cast stainless steel cooking grids - one side is pointed for those perfect steakhouse sear marks while the other side has grooves for continuous basting. The Broil King 470 built-in 956077 includes the incredible Flav-R-Wave cooking system that provides superior heat distribution across the entire surface of the grill and protects the burners. Drippings that fall onto the Flav-R-Wave are instantly vaporized, the vapor is then infused back into the food for that unmistakable barbecue flavor. The Broil King 956077 has four(4) patented Dual-Tube burners that are made from high-quality, heavy-duty stainless steel. These large diameter, tube-in-tube side ported burners provide even heat distribution with two rows of flame per burner. Broil King's 956077 built-in grill also includes Linear-Flow valves with 180-degree Sensi-Touch control knobs gives you infinite heat control, allowing you to set your grill to the perfect temperature for searing, roasting or slow cooking. The powerful 15,000 BTU stainless steel rear burner pairs perfectly with a premium spit rod and motor to consistently deliver even heat for superior results.