Costco “Infinity Spa” jets are available. The bottom of the diffuser has number 218-4000 . This is a poly storm jet, textured and scalloped.Only available in white at www.waterwayparts.com. The part number for the entire jet is
212-8160. Jet faceplate is 4″ diameter and overall height of jet is 4 1/2″.
https://waterwayparts.com/LARGE-FACE-POLY-STORM-WHITE-212-…/
waterwayparts 