Application: IDXL2ICB1931 Integrated Control Board fits for Hayward H-Series Low Nox Pool Heater IDL / IDL2 Models: H250IDL1, H250IDL2, H250IDPL1, H250IDPL2, H300IDL1, H300IDL2, H300IDPL1, H300IDPL2, H400IDL1, H400IDL2, H400IDPL1, H400IDPL2. Professional Integrated Control Board Replacement Kit: Our Integrated Control Board is designed for direct replacement of old damaged Hayward integrated control board. IDXL2ICB1931 Integrated Control Board replacement kit is made in strict accordance with the original device data to ensure a perfect fit and get your heater running again quickly.