506 52 sq.ft. Sta-Rite 50TX, 50GPM-TX, 50TXR, T-50TX, T-50TXR, PTM50
80506
| OD | null（mm） | Length | null（mm） |
| Top | 4-3/16" Open | Bottom | 4-3/16" Open w/ 12 concentric slots |
| Manufacturer | 80506 52 sq.ft. Sta-Rite 50TX, 50GPM-TX, 50TXR, T-50TX, T-50TXR, PTM50 UHD-SR50 FC-2530 PSR50-4 | ||
| Replacement | Unicel：UHD-SR50 Filbur：FC-2530 Pleatco：PSR50-4 | ||
| 80506 | |
| OD | 8-11/16" |
| Length | 13-5/16" |
| Top | 4-3/16" Open |
| Bottom | 4-3/16" Open w/ 12 concentric slots |
| Manufacturer | 52 sq.ft. Sta-Rite 50TX, 50GPM-TX, 50TXR, T-50TX, T-50TXR, PTM50 |
| Replacement | Unicel: UHD-SR50 Filbur: FC-2530 Pleatco: PSR50-4 |