The unicel 5CH-502 hot tub filter has the larger 2 inch male MPT threads on the bottom that fits select Marquis Spas that use the 20041 or 20091 OEM filter as well as select Cal Spas that use the FIL11100202 OEM filter. It’s best practice to confirm that this filter is the same size as the existing cartridge in your Marquis or Cal Spa model before ordering to ensure proper fitment.
Filter details:
- Unicel P/N: 5CH-502
- Diameter: 5-3/16"
- Length: 12-1/2"
- Top: Handle
- Bottom: 2" MPT Thread (Fine)
- Media: 50 sq.ft.
- Filter Media: 30z
- Pleat count :197
Also compatible replacement for:
- Pleatco PPM50SC-F2M
- Master Deluxe M50501
- Filbur FC-0195
Also compatible replacement for:
- Marquis OEM 20041
- Marquis OEM 20091
- Marquis Spas OEM 370-0237
- Cal Spas FIL11100202
- Unicel C-5303
- Pleatco PPM50SC-F2M
- Filbur FC-0195
- Master Deluxe M50501
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 two years or more, depending on your level of use and cleaning routine.
