Rec Warehouse hot tub filters
The Unicel 2026 Replacement Guide lists 7 of the cartridges on this site for Rec Warehouse. 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 | Rec Warehouse OEM # | Source |
|---|---|---|---|---|---|
| PWW10 / C-4310 / FC-3077 | 4-1/4" x 4" | 10 | not specified | 378900 | Unicel p.53 |
| PRB25-IN / C-4326 / FC-2375 | 5" x 13-5/16" | 25 | not specified | 303909, M-4326 | Unicel p.53 |
| PRB35-IN / C-4335 / FC-2385 | 5" x 9-1/4" | 35 | not specified | 303557 | Unicel p.53 |
| PLBS50 / C-5345 / FC-2970 | 5-5/16" x 10-1/8" | 50 | not specified | 173584 | Unicel p.54 |
| PWW50P3 / 6CH-940 / FC-0359 | 6" x 7-5/8" | 50 | not specified | 378902 | Unicel p.53 |
| PLBS75 / C-5374 / FC-2971 | 5-5/16" x 14-3/4" | 75 | not specified | 303433 | Unicel p.54 |
| PLBS100 / C-5397 / FC-2972 | 5-5/16" x 17-3/4" | 100 | not specified | 303434 | Unicel p.54 |
If your Rec Warehouse filter isn't here, it may not be in our checked list yet. We only publish matches we can confirm in a manufacturer catalog.