Cal Spas hot tub filters
The Unicel 2026 Replacement Guide lists 6 of the cartridges on this site for Cal 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 | Cal Spas OEM # | Source |
|---|---|---|---|---|---|
| PMT50 / C-4305 / FC-1630 / FC-1617 | 5" x 14-3/4" | 50 | not specified | not listed | Unicel p.30 |
| PPM50SC-F2M / 5CH-502 / FC-0195 | 5-1/4" x 12-3/16" | 50 | not specified | FIL11100202 | Unicel p.30 |
| PRB50-IN / C-4950 / FC-2390 | 5" x 13-5/16" | 50 | not specified | not listed | Unicel p.30 |
| PCAL60-F2M / 5CH-752 / FC-0202 | 5-3/16" x 16" | 60 | not specified | not listed | Unicel p.30 |
| PLBS75 / C-5374 / FC-2971 | 5-5/16" x 14-3/4" | 75 | not specified | not listed | Unicel p.30 |
| PCAL100 / C-4995 / FC-2940 | 5" x 23-5/8" | 100 | not specified | not listed | Unicel p.30 |
If your Cal 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.