Clean & Clear Plus 420

The Unicel C-7471 is a compatible replacement for the R173576 and 178584 used in the Pentair Clean & Clear Plus pool filter. Also compatible replacement for 817-0106 cartridges used in Waterway Crystal Waters 425 pool filters. For optimal fit and performance, verify that this cartridge matches the dimensions of your old filter. Filter details: Unicel Part no: C-7471 Diameter: 7" Length: 26-1/16" Top: 3" Open Bottom: 3" Open Media: 105 sq.ft. Filter Media: 4oz Reemay Pleat count: 168 Compatible replacement for: Waterway 817-0131 Waterway 817-0106 Penatir 178584 Penatir R173476 Penatir R173576 Pleatco PCC105 Filbur FC-1977 How long should Unicel filters last? While most pool filters may need to be changed every season, Unicel brand filters are made with REEMAY premium trilobal filtration media that delivers 45% more surface area over standard rounded filter fibres and can last up to 2 seasons or more, depending on your level of pool filtration and filter cleaning routine.