This 107485-01, NG8251 Pilot ODS was used in many of the Vanguard, Comfort Glow, Desa, FMI, Design Dynamic and other fireplaces and gas logs from many different manufactures. This is the 107485-01 Pilot ODS assembly used to control the gas control valve on many of the devices used today in direct vents and vent free fireplaces, gas logs, zone heaters, wall heaters and other appliances.