Dynasty Spa, Leisure Bay Spa

The Unicel C-5345 filter cartridge fits in select hot tubs as well as several Pentair and Waterway brand pool filters. For optimal fit and performance, verify that this filter cartridge matches the dimensions of the old filter in your your hot tub or pool filter. Filter details: Unicel P/N: C-5345 Diameter: 5-5/16" Length: 10-1/8" Top: 2-1/8" Open Bottom: 2-1/8" Open Media: 45 sq.ft. Filter Media: 3oz Reemay Pleat count: 230 Compatible replacement for: Pleatco PLB50 Filbur FC-2970 Master Deluxe M50451 Pentair R173584 Pentair 173584 Waterway 817-0014 How long should Unicel filter cartridge filters last? While most pool and filters need to be changed every six to twelve months, 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 18 months or more, depending on your level of hot tub use and filter cleaning routine.