Pentair Sta-Rite Max-E-Therm SR300 Copper Heat Exchanger (77707-0243) filters When the original plate is

When the original plate is missing

Genuine Hayward part TVX7000BA

Filter cartridge pack for compatible spa and pool applications using SR400 and S7M400 references

When one end dimension or opening style differs from more common cartridges

Pentair Sta-Rite Max-E-Therm SR300 Copper Heat Exchanger (77707-0243) filters When the original plate isA copper heat exchanger is one of the most important components in a Max E Therm SR300 heater, transferring heat from combustion to the pool or spa water. This replacement is used when the existing exchanger is leaking, scaled, damaged, or no longer serviceable. Because heat exchanger work involves water, combustion, and safety systems, the repair should be completed by a qualified technician who can inspect the cause of failure and verify operation