Guardian Filtration Products2 Pack - New Spa Filter Cartridges Fit: UNICEL 6CH-940-FILBUR FC-0359-Pleatco PWW50P3

I’ve bought these online when my father unexpectedly went to Flo. And I did not have time to go to the spa store. They worked great and we’re less expensive than what I normally paid. I am a new customer.

Can't say much more. If it fits it fits. Only so much you can expect from a spa filter. It filters the water, it will not do anything else.

Very good work well keep my hot tub clean and clearBest filter

Bought these for a 2020 Aspen hot tub. Construction seems OK but the thread mounts were not as tight as the original filters.

These filters were exactly what we were looking for when repairing a recently aquired thermo spa hot tub. The filters work great and have a fantastic fit, however make sure to turn off the power to the tub before making the attempt to pull them out. Even with just the circulator pump on there is so much auction I was not capable of removing the filters.This was nice an easy to purchase here on Amazon, I could not find them in any local spa supply store as they are apparently hard to find.

If you have a Master spa swim spa these are the perfect replacement for your filters, AND they are way cheaper!!! However you will still have to buy the filter that has a mineral cartridge from the company.

Perfectly fits my endless pool. I was initially not sure since the turning nob was smaller, but when I put it in, it screws perfectly in place. I got two 2-pack to serve as replacement for my older ones. Now I can still swim while one set is cleaned and dried.

This is very good, I had been using in my spa and keep it very nice and clean, thank you