Jacuzzi Brothers hot tub filters
The Unicel 2026 Replacement Guide lists 1 of the cartridges on this site for Jacuzzi Brothers. Many tubs use only one of these, so measure your old filter or check the number printed on its end cap.
| Cartridge (Pleatco / Unicel / Filbur) | Diameter × length | Sq ft | Models | Jacuzzi Brothers OEM # | Source |
|---|---|---|---|---|---|
| PJ25-IN-4 / C-5625 / FC-1425 | 5" x 13-1/4" | 25 | CFR-25 (in-line), CFT-25 (in line) | 42-2891-08-R | Unicel p.41 |
If your Jacuzzi Brothers filter isn't here, it may not be in our checked list yet. We only publish matches we can confirm in a manufacturer catalog.