Hayward FDXLBKP1930 Bezel and Keypad Assembly Replacement Kit for Hayward Universal H-Series Low Nox Pool Heater Excellent salt water and chemical corrosion resistance Same water velocity through all tubes for faster heating Up to 18% savings by reducing pump run-time. Low NOx emissions meets clean air quality standards Common union for installation or service, adapts to larger plumbing recommended for greater efficiencies Recommend that the repair or replacement of components in gas fired, electrically powered devices be performed by a qualified technician for the safety purpose