Rocky Mountain Spas hot tub filters
The Unicel 2026 Replacement Guide lists 1 of the cartridges on this site for Rocky Mountain 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 | Rocky Mountain Spas OEM # | Source |
|---|---|---|---|---|---|
| PLBS50 / C-5345 / FC-2970 | 5-5/16" x 10-1/8" | 50 | not specified | not listed | Unicel p.54 |
If your Rocky Mountain 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.