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this cover helps extend the lifespan of your heater by preventing damage to the display and control components
The ProSeries 31" Sand Filter is easy to install and maintain
please check owners manual to ensure compatibility
tool-free access for servicing
fits dual-wheel slot on polaris pool vacuums
Hayward Thermistor For HC-Series HDF400 | FDXLTER1931 Pentair FNS Plus Filter Bulkhead Kit this cover helps extend theThe OEM Hayward Thermistor, model FDXLTER1931, for the Universal HC Series HDF400 Heater is a vital component designed to monitor and regulate water temperature with precision. Featuring a standard Cupro Nickel heat exchanger, this thermistor offers excellent saltwater and chemical corrosion resistance, ensuring long term durability and reliable performance in harsh pool environments. Its robust construction and high sensitivity make it essential for
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