The Unicel C-4999 pleated hot tub filter is longer at 26-11/16 inches with 2-1/8 inch holes on the top and the bottom of the cartridge. This filter fits a range of hot tub models, and for optimal fit and performance, verifying that this filter cartridge matches the dimensions of the old filter in your spa is good practice.
Filter details:
- Unicel P/N: C-4999
- Diameter: 4-15/16"
- Length: 26-11/16"
- Top: 2-1/8" Open
- Bottom: 2-1/8" Open
- Media: 100 sq.ft.
- Filter Media: 3oz Reemay
- Pleat count: 210
Compatible replacement for:
- Pleatco PRB100
- Filbur FC-2397
- Pentair 17-2633
- Pentair R173436
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.
