Spa brand
Caldera filter cartridges
9 rich cartridge records compiled from 1 matching source brand entry.
Model and OEM part cross-reference
Model wording is retained from the source. Match the OEM number where present, then verify cartridge dimensions.
| Model | OEM part | Unicel | Pleatco / Filbur | Verification |
|---|---|---|---|---|
| Caldera Spas | 74148 | C-4335 | PRB35-INFC-2385 | cross-checked against 3 sources |
| Caldera Spas | 302005 | C-4950 | PRB50-INFC-2390 | cross-checked against 3 sources |
| Caldera 50 (new style) | — | C-7350 | PCD50NFC-3963 | cross-checked against 3 sources |
| Caldera Spas | 1019401 | C-7350 | PCD50NFC-3963 | cross-checked against 3 sources |
| Caldera 75 (new style) | — | C-7375 | PCD75NFC-3964 | cross-checked against 3 sources |
| Caldera Spas | 1019301 | C-7375 | PCD75NFC-3964 | cross-checked against 3 sources |
| Caldera 50 | — | C-7451 | PCD50FC-3084 | cross-checked against 3 sources |
| Caldera Spas | 033016 | C-7451 | PCD50FC-3084 | cross-checked against 3 sources |
| Caldera 75 | — | C-7479 | PCD75FC-3085 | cross-checked against 3 sources |
| Caldera Spas | 033017 | C-7479 | PCD75FC-3085 | cross-checked against 3 sources |
| Caldera Spas | 74817 | C-8300 | — | single-source |
| Caldera 100 | — | C-8399 | PCD100WFC-3965 | cross-checked against 3 sources |
| Caldera Spas | 1039607 | C-8399 | PCD100WFC-3965 | cross-checked against 3 sources |
| Caldera Spas | 76136 | C-8465 | PWK45NPWK65FC-3960 | cross-checked against 3 sources |
Spa model names can span multiple model years. Measure before ordering or use the cartridge lookup.