Control box with attached heater is the factory replacement for the 1993-1994 Hot Spot Round Z model. It's identical in looks, measurements and functionality as the original. This controller is backed with a 1 year manufacturers warranty from Watkins Manufacturing, the makers of Hot Spot spas.
| Replacement control box for the spa model listed below |
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| Models | Serial # Range | Years |
| Hot Spot Round | Z-330001 to Z-449999 | 1993-1994 |