Recommended for SM and SMBW series filters by Pentair/Purex. 8 full size grids complete the entire set for bottom manifold filters.
| Filter Area (sqft.) | Grid Length | Unicell Full Grid Part | Full Grid Width |
| 24 | 12″ | FG1002 | 11 1/2″ |
| 36 | 18″ | FG1003 | 11 1/2″ |
| 48 | 24″ | FG1004 | 11 1/2″ |
| 60 | 30″ | FG1005 | 11 1/2″ |
| 72 | 36″ | FG1006 | 11 1/2″ |
