These certified gas fire pit inserts incorporate a whistle-free flex line between the gas valve and burner pan offering insert flexibility and simpler installation.FeaturesPerfect for fire pits without electricity and need for flame sensing.Flex line configurationFlame sensing - flame blows out, gas will turn offSpark ignition - No match required.Complete drop-in fire pit insert utilizes a standing pilot with thermocouple to safely control gas flow, manual spark igniter (AA battery) and safety pilot valve.CSA Certified up to 140K BtuComes fully assembled with #304 stainless steel pan & burner, FPPK-HC control box with pilot assembly and whistle-free flex line.