Hearth Products Controls (HPC Linear Fire Pit Interlink Burner (LTBSS24-NG), 24-Inch, Stainless Steel, Natural Gas 24-inch linear interlink for gas fire pit 304 stainless steel construction; Female 1/2-inch NPT pipe thread; Drilled, staggered burner ports Natural gas ready; Propane conversion available (LTBSS24-LP); 50,000 BTU Includes T-burner and installation manual 10-inch center flame height