PDC Spas hot tub filters
The Unicel 2026 Replacement Guide lists 2 of the cartridges on this site for PDC Spas. 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 | PDC Spas OEM # | Source |
|---|---|---|---|---|---|
| PWW10 / C-4310 / FC-3077 | 4-1/4" x 4" | 10 | not specified | not listed | Unicel p.47 |
| PRB25-IN / C-4326 / FC-2375 | 5" x 13-5/16" | 25 | not specified | not listed | Unicel p.47 |
If your PDC Spas filter isn't here, it may not be in our checked list yet. We only publish matches we can confirm in a manufacturer catalog.