The Unicel C-5351 hot tub filter fits in select larger Coast Spa models that use the 30-1/8 inch longer filter with 2-1/8 inch hole on the top and bottom. For optimal fit and performance, verify that this filter cartridge matches the dimensions of the old filter in your Coast Spa.
Filter details:
- Unicel P/N: C-5351
- Diameter: 5-5/16"
- Length: 30-1/8"
- Top: 2-1/8" Open
- Bottom: 2-1/8" Open
- Media: 135 sq.ft.
- Filter Media: 3oz Reemay
- Pleat count: 222
Compatible replacement for:
- Filbur FC-2976
- Pleatco PCST120
- Waterway Plastics817-0147
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.
