This FD heater o-ring kit is designed to use with Hayward Universal H-Series Low NOx pool heater models H150FDN, H150FDP, H200FDN, H200FDP, H250FDN, H250FDP, H300FDN, H300FDP, H350FDN, H350FDP, H400FDN, H400FDP.
Features:
- FD heater o-ring kit
- Fits hayward universal h-series low nox pool heater models H150FDN, H150FDP, H200FDN, H200FDP, H250FDN, H250FDP
- Also fits hayward universal h-series low nox pool heater models H300FDN, H300FDP, H350FDN, H350FDP, H400FDN, H400FDP
