Part number 56-4820GRY is a gray Magna series Dual Port Flowpath assembly (also known as a Twin Roto nozzle) manufactured by Balboa Water Group (under the HydroAir/ITT brand).
The following hot tub manufacturers and brands have used this specific jet component or compatible assemblies from the HydroAir Magna series in their spas:
Dimension One Spas: This part is frequently used as a compatible replacement for Hydra-Flex jet faces.
Baja Spas: Historically used these HydroAir twin roto jets and related Magna series components in their filtration and jet systems.
Jacuzzi Spas: Specific older models or aftermarket assemblies for Jacuzzi-branded spas utilize this part.
Morgan Spas Often incorporates the HydroAir Magna series line in their portable spa designs.
Leisure Bay Spas: Known to use HydroAir components, including the Magna and Micro-Magna series.
Key Specifications for Identification:
Design: Twin Roto (pulsating massage style) with a "dual port" flow path.
Dimensions: The base diameter is 1-3/4", and the total length is 1-7/8".
Material: Gray plastic with a bearing race for the rotating nozzle
