I have a 12-sided in-ground spa (raised 18", surrounded by concrete, providing a ledge of about 2 ft to sit on) and I desperately need to replace the cover. I'd prefer to get something like I already have...a 12-sided insulated hard cover...but all the sites I have seen online seem not to have such a thing. The most sides I ever see online is 8. The guy who built our pool/spa did not have this cover custom made so someone must carry these things. We have no info about the manufacturer/supplier of the cover, and the pool guy is also long gone, so we can't ask him.
If I have to have this custom-made, I presume that would increase the cost significantly, in which case I would probably settle for an octogon. But if anyone knows where I can get a 12-sided insulated hard cover, that would be ideal! Thanks!