Replacement 65 square foot filter cartridge designed for select Hot Spring Spas, Tiger River, and Watkins Manufacturing hot tubs. This dual-open cartridge measures 10-1/2" in length with an 8-1/2" diameter, featuring 3" inner diameter openings on both top and bottom ends.
| Application | Hot Spring Spas (Watkins), Tiger River Spas (Watkins), Watkins Mfg/Hot Spring Spas, Watkins Mfg/Tiger River Spas |
| Bottom Physical Dimension | 3" |
| Bottom Style | Open |
| Diameter | 8-1/2" |
| Length | 10-1/2" |
| Media Type | 3oz |
| Model | All Models, Grandee, Classic, Sovereign |
| Square Footage | 65 sq ft |
| Top Physical Dimension | 3" |
| Top Style | Open |
