This part is a Jet Back Diffuser that fits Waterway Whirlpool 5" face Jets. This Diffuser can replace the Adjustable and the non adjustable style jets backs..
See the pictures for measurements and styles.. The jet this diffuser fits is usually found in the floor of a hot tub.
Note: This is a full shut off style diffuser which is why is has the scoop on the end of the diffuser.. If your old jet had the style without the scoop you would still use this diffuser as it is the only replacement version available. This diffuser will add the feature of being able to turn the jets off by twisting it.. If you don't want that feature simply cut the scoop off..
