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 Hot Spring Grandee, Hot Spring Sovereign and Hot Spring Prodigy, 1997-current Hot Spring Jetsetter, 1998-2003 Hot Spring Landmark and 2001-current Hot Spring Vanguard HP spa models. This pump is also the replacement for the Tiger River 1997-current Bengal and Tiger River Sumatran and 1998-2002 Tiger River Siberian spa models. 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.