We have an older Intex Ultraframe 20 X 52 that is in need of a new liner. I am looking for some one to do some measurements on an Intex Prism pool that is between an 18 foot and a 24 foot round pool. Intex doesn't have the Ultraframe liner for our pool but they do have 20 x 52 Prism liners available. My research shows the legs and the top beams and vertical legs to be the same on the 18 through 24 foot Prism pools. I just need to figure out if the Prism liner will fit on our Ultraframe frame. I would prefer to spend $250 on a liner instead of $1000 for a new pool since we are hard plumbed and don't need any equipment with it.