The Unicel C-5635 filter cartridge fits the older style Jacuzzi Brother CFR-37 inline filter that uses the JACUZZI 42-3533-00-R filter cartridge. This filter fits a range of hot tub models. For optimal fit and performance, verify that this filter cartridge matches the dimensions of the old filter in your spa.
Filter details:
- Unicel P/N: C-5635
- Diameter: 5"
- Length: 13-5/16"
- Top: 2-3/8" Open
- Bottom: 2-3/8" Open
- Media: 37 sq.ft.
- Filter Media: 4oz Reemay
- Pleat count: 158
Compatible replacement for:
- Jacuzzi Brother 42-2522-00-R
- Pleatco PJ37-IN-4
- Filbur FC-1437
How long should Unicel pool and 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 18 months or more, depending on your level of hot tub use and filter cleaning routine.;
