Cool pool water is refreshing but chilly pool water is no fun. Keep your pool at the temperature you enjoy and extend your swimming season with a pool heater. Make sure that heater is running the best it can with this Hayward FD Burner Replacement Kit. This FD burner replacement kit fits Hayward H-Series pool heaters. This pool heater replacement part is Hayward model number FDXLBRN1930. You can use these replacement burner parts with both natural gas and propane pool heater. This replacement part fits the following models from the Hayward Universal H-Series Low Nox pool heater line: H150FDN H150FDP H200FDN H200FDP H250FDN H250FDP H300FDN H300FDP H350FDN H350FDP H400FDN and H400FDP. Keep your pool heater in good shape by replacing an old or damaged part with the Hayward FD Burner Replacement Kit.