Pentair 475601 | ETi Stack Flue Sensor Best Seller 40 inch hoses

40 inch hoses

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Inside the Box:

Pentair 475601 | ETi Stack Flue Sensor Best Seller 40 inch hosesGenuine Replacement part: Works with ETI 400 heaters. Each heater has two stack flue sensors. Monitors temperature inside the heater. The stack flue sensor will shut down the heater is the temperature in the heater is anywhere close to 170 F (77 C).