Hello Nchambers - We’d be glad to assist you but we have a couple questions. Does the face ring measurement match the dimension below? How big is your pool (LxW)? Are you looking for an LED light or an incandescent style light fixture? How many feet of cord will you need?
We do not have a light with a square housing but we do have one with a 6" diameter face. From the lens to the back of the light is 4.62". It’s called the Pentair Aqualight.
Pentair bought out American Products several years ago and sells the same lights under the Pentair name.