Hearth Products Controls (HPC Linear Fire Pit Interlink Burner (LTBSS36-NG), 36-Inch, Stainless Steel, Natural Gas 36-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 (LTBSS36-LP); 75,000 BTU Includes T-burner and installation manual 10-inch center flame height