EL118 United Spas PCB, United Spas, B5 to B6 Conversion, w/Transformer, Cord $507.95 EL118 United Spas PCB, United Spas, B5 to B6 Conversion, w/Transformer, Cord The following topside(s) are compatible with the above circuit board: 58-553-1010
HZCT United Spas Control, United Spas CT, Top Mount Heater $621.07 HZCT United Spas Control, United Spas CT, Top Mount Heater