Flame sensor replacement * Fits hayward universal h-series low nox induced draft heater models h150fdn, h150fdp, h200fdn, h200fdp, h250fdn, h250fdp, h300fdn, h300fdp, h350fdn, h350fdp * Also fits hayward universal h-series gas heater model c_paheat * Also compatible with Hayward h-series low nox induced draft heater models H400FDN, H400FDP, H250IDL2, H350IDL2, H400IDL2 * Weighs 11.3-pound