Home / Spa filters / 817-5000 / 6540-471
Hot Tub & Spa Filter Cartridges
Replacement Spa Cartridge — Compatible with Pleatco PRB50-IN / Unicel C-4950 / Filbur FC-2390 (50 sq ft drop-in)
$14.99Change every 4 months
Guaranteed to fit these models
We verified this part against the models listed. If it doesn't fit a model we named, the return ships on us.
| Replaces (OEM ref) | 817-5000 / 6540-471 |
|---|---|
| Filtration / build | 50 sq ft — DROP-IN (no thread). The industry workhorse; fits most hard-shell hot tubs. |
| Grade | Reemay polyester pleated media |
| Pack | 1 cartridge |
| Replacement window | Change every 4 months |
Price shown is a representative market price for the compatible part (market_snapshot); on the live store the price you see is the price you pay. Fit data is manufacturer-documented. Generic vs OEM →