Compatibility:Replacement Kit FDXLBKP1930 Compatible with H-Series Low NOX Pool Heater Fits Models H150FDN H200FDN H250FDN H300FDN H350FDN H400FDN H150FDP H200FDP H250FDP H300FDP H350FDP H400FDP Crafted from high-quality materials, ensuring stable and reliable operation for long-lasting performance Provides smooth key response and operation, delivering a pleasant user experience Easy Installation: Simple and straightforward installation, no professional skills required, allowing for quick replacement and installation of the keypad assembly This replacement kit compatible with Universal H-Series Low NOX pool heater models, including H150FDN, H150FDP, H200FDN, H200FDP, H250FDN, H250FDP, H300FDN, H300FDP, H350FDN, H350FDP, H400FDN, and H400FDP.