Stanbroil 12" Round Fire Pit Burner Ring, Double Ring, Black Steel 12" Round Fire Ring for outdoor use with 1/2" center Female Gas Inlet Heavy duty warp-resistant steel with high temperature black paint, 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