I was going to replace the liner in this pool a year or two ago, and then I found out I had 2 rusted uprights. The project then got put off until now. I'm still not 100% sure on the parts I'm about to buy. I had to do a bunch of research. Apparently Artesian Pools was just an importer, and did not manufacture the pools. They are defunct, and none of the part numbers on the original pool's paperwork return any results on Google. I eventually found out that their pools were manufactured by Wilbar International, who is still alive and well. The specific pool model is "8500 Series Echo Canyon II Ultra 54" I found the upright listed on INYOPools for an Artesian Sandy Point 54", which is also an 8500 series pool with a different pattern. This is where the confusion sets in. The upright is 51 3/4" and it's under the section "Uprights for 52" Tall Pools" on their website. That length is correct according to my parts diagram that came with the pool as well as my own measurement. How exactly do I have a 54" pool with 52" uprights? Is anyone familiar with Wilbar/Artesian Pools? Is this a true 54" pool or is it a 52" with some marketing wank? Are above grounds measured by the wall height or the actual depth? It likely is 54" in the center, but not near the edges. Like... is it common to have a 52" pool wall and the ground "dug out" a little to accommodate a 54" liner? This wasn't the cheapest pool when we had it installed, but it wasn't the most expensive either. I'm still not sure whether to buy a 52" or 54" liner, and I can't find any mention of the liner on any of the paperwork I have. It sure would suck to unbox and spread it out only to realize it doesn't fit.