TEST
Fits the following Hayward H-Series Heater models only:
H250IDL1, H250IDL2, H250IDPL1, H250IDPL2H300IDL1, H300IDL2, H300IDPL1, H300IDPL2H400IDL1, H400IDL2, H400IDPL1, H400IDPL2H1501, H150ED2, H150P1, H150PED2H2001, H200ED2, H200P1, H200PED2H2501, H250ED2, H250P1, H250PED2H3001, H300ED2, H300P1, H300PED2H3501, H350ED2, H350P1, H350PED2H4001, H400ED2, H400P1, H400PED2