The Unicel C-8300 hot tub filter is used in select Watkins Caldera Spas that use the OEM 74817 filter. 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-8300
- Diameter: 8"
- Length: 16-1/2"
- Top: Handle
- Bottom: 3-5/8" Open with lip seal
- Media: 100 sq.ft.
- Filter Media: 3oz Reemay
- Pleat count: 259
Compatible replacement for:
- Caldera Spas 74817
- Watkins Hot Springs 100SF Gleam 77004
- Pleatco PWK100
- Filbur FC-3966
How long should Unicel pool and 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.
