The Balboa HydroQuip VS511SZ Circuit Board, Serial Standard, 4220/6220B
The Balboa HydroQuip VS511SZ Circuit Board, Serial Standard, 4220/6220B’s cutting-edge product design and commitment to the advancement in technology continues to make Balboa the leader in the spa industry. It is also why spa manufacturers throughout the world continue to rely on Balboa for all of their spa designs. So whether you are building a spa. Whether you are replacing a circuit board on an older spa model. Whether you need a generic circuit board to retrofit, Balboa is the right solution for you. It is the perfect addition to your pool and also spa.