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59023300 (full grid ×7)
Subtracting free chlorine from total provides the combined chlorine reading DPD 1
Run filter system continuously for at least 1 hour after application
90" OD Pool or spa rail
Stainfree is ideal for treating staining on all pool surfaces and is compatible with all sanitizing systems
Unicel FS-2004 Complete DE Filter Grid Set | 48 sq. ft. | 7 Full + 1 Partial Grid | FG-1004 + PG-1904 TNIL 59023300 (full grid ×7)The 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
