Balboa Water Group 5235210-S Ultimax™ Pump 3HP 230V 2 Speed 56 Frame. Premier Ultimax pumps are the ultimate benchmark in design flexibility and performance. From small applications for zone seating and focused therapy up to multi pump configurations to run 100+ jetted systems. Ultimax™ pumps supply the specific performance features you require and the long service life and powerful performance spa owner's demand.