Hayward IDXL2ICB1931 Integrated Control Board Replacement for Hayward H-Series Low Nox and Hot Tub Heater Integrated control board replacement Fits hayward universal h-series low nox induced draft heater models h250idl2, h350idl2, h400idl2 Also fits hayward universal h-series low nox induced draft heater New part incorporated on all IDL Heaters built after 9/20/04 Weighs 18-1/2-pound