This is a Genuine OEM Direct Replacement Master Spa Part
Balboa Equipment MS501s PC circuit board for Master Spas. Part # X801024
You may see MS501SR1A on your old board
Dimensions:
Width: 11 inches (27.94 cm)
Height: 5 inches (12.7 cm)
X801024
MS501S Circuit Board
V/N: 54355 / 53620
Have also seen this part as V/N 22972_E
