Unicel FS-2004 Complete DE Filter Grid Set | 48 sq. ft. | 7 Full + 1 Partial Grid | FG-1004 + PG-1904 TNIL Do not add product within

Do not add product within 2 days of adjusting calcium hardness or during a full pool acid bath

90" OD Pool or spa rail

59023300 (full grid ×7)

Subtracting free chlorine from total provides the combined chlorine reading DPD 1

Unicel FS-2004 Complete DE Filter Grid Set | 48 sq. ft. | 7 Full + 1 Partial Grid | FG-1004 + PG-1904 TNIL Do not add product withinThe Unicel FS 2004 is a complete replacement DE filter grid set for 48 square foot diatomaceous earth filter systems. This set includes all 8 grids needed for a full filter re grid 7 full size grids (FG 1004) plus 1 partial grid (PG 1904) restoring your filter to factory performance in a single service. Complete DE Filter Grid Set 8 Grids Included This set includes everything needed for one complete filter re grid: 7 full grids (FG 1004) + 1 partial