Stainless steel Tube-in-Tube burner. Fits Imperial and Regal models with front to back Tube burners. Features dual side-ports which promote longevity and prevents wear. Broil King's patented Dual-Tube burner design features a smaller diameter stainless steel tube within a larger outer tube, which helps diffuse gas throughout the burner ensuring even flame and even heat front-to-back. Always tune-up your Broil King gas grill with genuine exact-fit replacement parts. 1 piece.