Hearth Products Controls (HPC Square Stainless Steel Fire Pit Burner (FRSSQ-12-NG), 12x12-Inch, Natural Gas 12 x 12 inch square burner for gas fire pit or fire feature 304 Stainless Steel Construction; Female 1/2 inch gas inlet; Drilled Burner Ports Natural Gas Ready; Propane Conversion Available (FRSSQ-12-LP); 90,000 BTU Includes square burner and installation manual Square; 12 x 12 inch; 2.5 Inch Gas Inlet; 14 inch Flame Height