The "Broilers" used at Ruth Chris,and many other Steakhouses are underfired, Ceramic "Infra Red" South Bend Broilers.
They come in Single, Double, Counter Top, and with Top Warming Oven as well as a "Salamander". There are other brands on the Market, But the South Bend is the most popular, and is used at "Ruth Chris Steakhouse". They utilize a Internal Fan to maintain and contol the high heat. It was not designed Custom , is standard and was used many years before Ruth Chris opened for business. It’s most popular on the East Coast.