Fits for Hayward universal h-series low nox induced draft heater models h150fdn, h150fdp, h200fdn, h200fdp, h250fdn, h250fdp, h300fdn, h300fdp, h350fdn, h350fdp
Fits for Hayward h-series low nox induced draft heater models H400FDN, H400FDP, H250IDL2, H350IDL2, H400IDL2