12" Round Fire Ring for outdoor use with 1/2" center Female Gas Inlet | Durable Stainless Steel #304, Rated BTU Max : 92,000 (Double Ring) | Stylish Design:New cross-bar design for better gas distribution,Suitable for either Natural Gas or Propane.If using for propane an air mixer valve must be installed. | Gas Holes are drilled not punched for smoother gas flow creating(Concentric rings increase in diameter for better flame height) | Package Contents: 12" Round Burner Ring; 1/2 inch Inlet which includes inlet plug and wrench, Installation Manual