POOLPURE NSF-50 Certified Spa Filter Replace Watkins 31489, Pleatco PWK30, Unicel C-6430, Filbur FC-3915, P/N0969601, 71825, 73178, 73250, 75401, 30 sq. ft. Hot Spring Spa Filter, Pack of 4

Was the exact same as the name brand that wasn't available on Amazon

Awesome pricing and work great

Filter passen

These appear to be well made for the money, and are a perfect fit on my 2010 Hotspring Grandee. Filtration is at least as good as the OEM Tri-X filters, and flow seems to be slightly better. My original Tri-X ceramic filters lasted almost 10 years... Wait, what!?!? You read that correctly, 10 years! I was religious about chemicals, maintenance and refills. Even at the point I removed them from usage, the Tri-X filter material was still in good shape, but the end caps were deterioriating to the point where they could no longer be used. Pretty impressive kit, but they ought to be for 3X the price! By my logic, if these last 3 years or so with similar usage, I'll continue to recommend them. If not, I'll likely go back to the OEM Tri-X filters. Time will tell, but so far, so good. I'll be sure to update after a year or more. Stay tuned!

Seem to be excellent spa filters..