50 sq. ft. Cartridge Filter Cal Spas, Martec, Sonfarrel C-4305 FC-1618
- Diameter : 4-15/16
- Length : 14-7/8
- Top End Cap: id/config : 2-1/8 / open
- Bottom End Cap: id/config : 2-1/8 / open
The cartridge is used on the following spas:
- Advantage Mfg.
- Cal Spas
- Dolphin
- Martec, OEM P/N CL-2807
- Pageant Spas
- Sonfarrel, OEM P/N 220142
- Sundance Spas, OEM P/N 6540-497
Benjamin W. –
Quality product
Margaret B. –
Quality product