The Unicel C-5637 hot tub filter fits in select older model Pacific Marquis spas as well as select Amish Country Spa models. This filter fits various hot tub models. 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-5637
- Diameter: 5-3/16″
- Length: 19-5/8″
- Top: 1-1/16″ Open
- Bottom: 1-5/8″ Open
- Media: 40 sq.ft.
- Filter Media: 4oz Reemay
- Pleat count: 109
Compatible replacement for:
- 37-0214
- Pleatco PPM40-4
- Filbur FC-3637
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.
