This is the third version of the Wavemaster® 7000 and it's a 1.65 horsepower single speed jet pump. It was used on the Hot Spring brand 1997-1999 Classic, 1997-current Grandee, Sovereign and Prodigy, 1997-current Jetsetter, 1998-2003 Landmark and 2001-current Vanguard HP spa models. This pump is also the replacement for the Tiger River spa models 1997-current Bengal and Sumatran and 1998-2002 Siberian. This pump replaces the Wavemaster® 5000 1 speed 1. 5hp pump (36745) that has been discontinued. This pump is also configured to run on 120volts. If your spa is permanently wired 230volts make sure to adjust the wires on the rear of the motor for your 230volt application.