The Unicel C-2303 filter cartridge has the 2-1/8 inch hole top and bottom and is a compatible replacement for the Pentair Chloro cartridge OEM 17-0052 and also fits in select Emerald Spa models. Please confirm that this Unicel cartridge is the same size with the same holes on the top and bottom as the existing cartridge in your spa model to ensure proper fitment and performance.
Filter details:
- Unicel P/N: C-2303
- Diameter: 2-7/8"
- Length: 17-1/16"
- Top: 2-1/8" Open
- Bottom: 2-1/8" Open
- Media: 8.5 sq.ft.
- Filter Media: 3oz Reemay
- Pleat count: 84
Also a compatible replacement for:
- Pentair - Rainbow OEM 17-0052 Chloro-Cartridge
- Pleatco PRB8.5
- Filbur FC-2324
How long should Unicel hot tub filters last?
While most hot tub filters need to be changed every six to twelve months, Unicel brand filters are made with REEMAY premium trilobal filtration media that delivers 45% more surface area over standard rounded filter fibres and can last up to two years or more, depending on your level of use and cleaning routine.
