Fits Pac Fab Sea Horse 500 (Stainless steel tank) or Sea Horse FSH-500 (Fiberglass tank)
Note: Four Unicel C-7493 125 sq. ft. cartridges are required. Filter top and bottom ends are open w/2-5/8" inside diameter
Unicel C-7493 replaces the following filter cartridges:
Pac Fab pool filter 1722849, 172887, and R173318
125 sq. ft. x 4 qty. = 500 sq. ft.
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