Get current pricing for Burner, BURNER-21531-ID Burner Area: 6.5 Sq. In. Max, 2.5 Sq. In. Min. Single Valve Control, 3npt Air Inlet, 2npt Gas Inlet, 3npt Mixture Outlet. Overall Length: 22.25 . Product Category: Process Equipment, Sub Category: Process Miscellaneous: