Sometimes it can be difficult to figure out what jet will git your tub.  Always look for numbers on the jet that can help identify it.  Measuring the face of the jet and the length will help identify it as well.  The easiest way is to email us 3 pictures.  1 of the face with a tape measure in front of it so we can see exactly what size it is.  do the same with a side shot and one of the back or nozzle of the jet.  A picture is worth a thousand words.  Thank you for visiting online spa parts where technical help is always free.