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The Unicel C-7490 is a 7000 Series 137 sq
Chlorine Resistant: Specifically formulated to withstand the chemical balance of treated pool water
inspect the mating socket on the vacuum head as well as the hose end fitting
9" open-hole bottom
Pentair Terminal Board | MasterTemp, ETi & Max-E-Therm Heaters | 42001-0056S FG3016 The Unicel C-7490 is aThe Pentair Terminal Board (42001 0056S) is the OEM replacement terminal board for the MasterTemp, ETi, and Max E Therm pool and spa heater series. IMPORTANT: LICENSED PROFESSIONAL INSTALLATION REQUIRED Gas and electrical heater components must be serviced by a licensed pool professional or qualified HVAC technician. Do not attempt to service gas or high voltage components without proper certification. The terminal board provides the central
