Waterway, Cal Spa, Coast Spa, Maax

The Unicel C-4995 hot tub filter features 95 Sq.Ft of REEMAY filtration media with 2-1/8 inch holes top and bottom and 23-5/8 inches long. For optimal fit and performance, verify that this filter cartridge matches the dimensions of the old filter in your spa. Filter details: Unicel P/N: C-4995 Diameter: 4-15/16" Length: 23-5/8" Top: 2-1/8" Open Bottom: 2-1/8" Open Media: 95 sq.ft. Filter Media: 3oz Reemay Pleat count: 222 Compatible replacement for: Pleatco PCAL100 Unicel C-4995 Master Deluxe M41001 Filbur FC-2940 Waterway 817-1000 How long should Unicel hot tub filters last? While most hot tub 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.