Used Pool: 15 x 30 or 15 x 25

Hi. We bought what was supposed to be a 15x30 Muskin Pool. As I am counting the parts and looking at the previous owner’s manual, I can’t tell if it’s a 15x30 or 15x25. The Serena STR 52 Yardmore Oval seems to be the closest match to what I have on hand. The pool wall is 51 1/2 inches tall. There are 8 steel uprights with buttresses on the straight sides and 12 on the curved ends. The curved uprights measure 50 3/8 tall x 6" wide. It has upright resin caps in champagne color, parts numbered 26990 and 26991. The ledges are either steel or aluminum. The wall is rippled steel with a gray starburst pattern on the upper half and what appears to be gray stems of grass on the lower half.

Also, I notice that most oval pools have pressure plates. What are they for? Would this pool require one?

Thanks for your help and expertise.