Description
USED Replacement board assembly #38751 compatible with the Pentair Whole House Water Softeners .
Compatible replacement for the following water softeners:
- Pentair Water Softening System (1-2 Bathrooms) Pentair 35920
- Pentair Water Softening System (3-4 Bathrooms) Pentair 35921
- Pentair Water Softening System (4+) Pentair 35922
This is a tested and working USED circuit board. *May have different settings and parameters then your existing systems.
