Hydroair union nut and tail piece, fits all their Genesis and perseus range of air blowers.
Hydroair Genesis 500W spa/bath air blower - No built in air switch or heater, needs to be powered and controlled by a control system.
Hydroair Genesis G70-2VH-S 700W whirlpool bath air blower - Integral PCB for Genesis touch pad control, integral 250W heater, variable speed function.