We purchased our 26' above ground pool from Fox Pools, Lancaster, Pa. 8 years ago. It came with a 25 year pro rated warranty, this was a major selling point ! this past spring I noticed rust under the top shelf in the pool wall, it didn't look that bad at first but after some light poking and prodding it grew into a fairly sized hole "see pics", I had a professional pool installer look at it and he suggest dismanteling the pool, he said when they rust like that they will eventually burst and that it was a safety risk. Since then I have heard of some other pools bursting due to rust. I have contacted Fox pools many times about the issue and they refused to do anything saying it was the manufacturer's responsibility. The manufacturer is ASAHI POOLS base in New York, they do not have a phone just an e-mail address, I have sent them many e-m's with photo's and never got a reply . If you have an above ground with steel walls please keep a close check on the condition. If you plan on buying an above ground I would reconsider.. Tim from Pa.