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The BALBOA Expander Circuit Board VS520SZ, 55137 enhances spa system control, providing reliable performance, easy integration, and expanded functionality for optimal operation.
Description:
- From Balboa Water Group
- Circuit board for hot tubs and spas
- VS520SZ
- Part no. 55137
- Regular price
- $156.99
- Sale price
- $141.99
Sale
-10%The BALBOA Expander Circuit Board VS520SZ, 55137 enhances spa system control, providing reliable performance, easy integration, and expanded functionality for optimal operation.
Description:
- From Balboa Water Group
- Circuit board for hot tubs and spas
- VS520SZ
- Part no. 55137
- Regular price
- $156.99
- Sale price
- $141.99
Sale
-10%Couldn't load pickup availability

Product Description
The BALBOA Expander Circuit Board VS520SZ, 55137 enhances spa system control, providing reliable performance, easy integration, and expanded functionality for optimal operation.
Description:
- From Balboa Water Group
- Circuit board for hot tubs and spas
- VS520SZ
- Part no. 55137
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