The Unicel C-2304 hot tub filter is compatible with Icon Spas that use the OEM 136629 filter cartridge. Icon Spas has used several different-size filters in its hot tub models. It’s best to confirm that this Unicel cartridge is the same size with the same as the existing cartridge in your spa model to ensure proper fitment and performance.
Filter details:
- Unicel P/N: C-2304
- Diameter: 2-3/4"
- Length: 6"
- Top: Closed
- Bottom: 1-1/16" Open
- Media: 3.7 sq.ft.
- Filter Media: 3oz Reemay
- Pleat count: 75
Also compatible replacement for:
- Pleatco PH3.7B
- Filbur FC-3027
- Icon Spas OEM 136629
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.
