The Broil King® Regal S 520 Built-In features 625 sq. in. of primary cooking surface and includes 5 stainless steel Dual-Tube™ burners, illuminated control knobs, Apex stainless steel cooking grids, stainless steel warming rack, stainless steel Flav-R-Wave™ cooking system, and electronic ignition. The S 520 Built-In grill head includes an insulating sleeve for combustable construction material.