Unicel 24" Replacement DE Filter Grid for 48 sq. ft. Systems | FG-1004
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- SKU:
- FG-1004
-
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About This Item
Precision-engineered as a drop-in replacement for 48 sq. ft. DE filter systems, the Unicel FG-1004 is a single full-size grid built to exact OEM dimensional tolerances. Its reinforced construction delivers long-lasting pressure resistance, reliable filtration performance, and a snug manifold fit across a wide range of Hayward, Pentair, Sta-Rite, Jandy, Jacuzzi, Waterway, and Astral filter models.
⚠️ IMPORTANT: CHECK BEFORE YOU BUY
This product is a single (1) replacement DE filter grid — it is NOT a complete set. A full filter service requires multiple grids. Hayward, Pentair, Jandy, Waterway, and Astral 48 sq. ft. systems use 7 full grids (FG-1004) + 1 partial grid (PG-1904). Sta-Rite and Jacuzzi Earthworks 48 systems use 8 full grids (FG-1004) with no partial grid required. Verify your filter model and grid count before ordering.
⚠️ IMPORTANT: Partial Grid Also Required for Some Systems
If your filter uses the 7 full + 1 partial configuration, you will also need the companion partial grid: Unicel PG-1904 Partial DE Filter Grid.
Specifications
| Filter System Area | 48 sq. ft. (total system) |
| Grid Length | 24" (measured end to end, collar not included) |
| Grid Width | 11" |
| Collar Configuration | Open slot, 2 notches |
| Material | High-grade DE filter fabric with reinforced seaming |
Note from Unicel: Collar has open slot (2 notches). Length is measured from one end of the grid to the other (collar not included).
Fits Into:
| OEM Brand | Filter Model | OEM Part Number | Grid Configuration |
| Hayward | Micro-Clear | DEX4800DA | 7 full (FG-1004) + 1 partial (PG-1904) |
| Hayward | Pro-Grid | DEX4800DA | 7 full (FG-1004) + 1 partial (PG-1904) |
| Pentair – American Products | 5000 Series | 59002400 | 7 full (FG-1004) + 1 partial (PG-1904) |
| Pentair – American Products | Titan CM | 59002400 | 7 full (FG-1004) + 1 partial (PG-1904) |
| Pentair – American Products | Titan RPM | 59002400 | 7 full (FG-1004) + 1 partial (PG-1904) |
| Pentair – American Products | Titan Stainless Steel | 59002400 | 7 full (FG-1004) + 1 partial (PG-1904) |
| Pentair – Pac Fab | FNS Plus 48 | 59002400 | 7 full (FG-1004) + 1 partial (PG-1904) |
| Pentair – Pac Fab | FNS 48 (Nautilus FNS Polymeric) | 19-2188 | 7 full (FG-1004) + 1 partial (PG-1904) |
| Pentair – Pac Fab | NS48 (Nautilus) | 19-2188 | 7 full (FG-1004) + 1 partial (PG-1904) |
| Pentair – Pac Fab | NSP-48 (Nautilus Plus) | 19-2188 | 7 full (FG-1004) + 1 partial (PG-1904) |
| Sta-Rite | — | WC108-4A | 8 full grids — no partial required |
| Jandy (Waterpik) | DEL/DEV 48 | A0560200 | 7 full (FG-1004) + 1 partial (PG-1904) |
| Jacuzzi | Earthworks EW 48 | 42-2970-05-R | 8 full grids — no partial required |
| Waterway Plastics | Crystal Water | 818-3910 | 7 full (FG-1004) + 1 partial (PG-1904) |
| Astral | 18046 Clarity DE | — | 7 full (FG-1004) + 1 partial (PG-1904) |
(This is not an exhaustive list.)
Pro Tip: Always turn off the pump and release all pressure from the filter tank via the air relief valve before opening the tank to replace grids. When rebuilding, confirm the correct grid count for your specific filter model — 7 full + 1 partial (Hayward, Pentair, Jandy, Waterway, Astral) or 8 full (Sta-Rite, Jacuzzi) — and inspect the manifold o-ring and collar alignment before reassembly. If you need the companion partial grid, see Unicel PG-1904.
Also known as: FG1004
