Great replacement filter cartridge for Unicel # C-7482, Pleatco # PJAN145, Filbur # FC-0820 and OEM # A0104100. This filter cartridge has 3 inch open holes both at top as well as bottom. It is 33 inch long and 7 inch wide filter and able to handle the top load of 145 sq ft. It is the most suitable for Jandy CL580 and provides you the complete filter protection from dust, sand and worms. It is very easy to install without any hassle.