I am not sure what type of pool this is. I am looking for joiner plates, top caps, and rails.
That looks like a 568PRUNBS plate - made by Trevi, I believe. Inyo does not carry them, so we recommend contacting these folks to see if they have them available.
I went to a Trevi dealer today and was told it is not from a Trevi pool. Very similar but not a “211” as they put it.
I’m sorry about that. I’m having a hard time finding that plate online as well. It could be a Cornelius plate - try to contact them here to see if they have it available somewhere.