replacement filter cartridge comes with a technical specification of Filbur# FC-0825, Pleatco # No, Unicel # C-9421, and OEM # A0558902. It is a high
performance filter cartridge can handle a top load of 200 Sq. Ft. This state of
the art 200 SQ. FT. Jandy CJ 200 filter with 5
15/16" open hole at the top and the bottom.