Description
Independent Supplier & Replacement Part Notice
We are an independent parts supplier and are not affiliated with, sponsored by, or endorsed by Watkins, Hot Spring, Caldera, Tiger River, or Solana. These names and their part numbers are used only to identify compatibility.
We offer replacement parts as alternatives to spa-branded parts. When this listing identifies a part as the same original-manufacturer replacement, it is supplied under the component manufacturer’s branding and part number, which may differ from the Watkins or spa-brand label and number. Other compatible alternatives are identified in the individual product listing. Please review the listed specifications, fitment details, and any installation differences before ordering.
Genuine replacement 30 square foot filter cartridge engineered for Hot Spring spas manufactured by Watkins after 1990. This premium filtration cartridge measures 6 inches in outside diameter and 10-1/2 inches in overall length, featuring 1 15/16 inch open-style openings on both top and bottom ends.
Designed exclusively for HotSpring brand spa systems, with certain Classic models requiring up to 5 of these cartridges for complete filtration coverage. Cross-reference part numbers FC-3915, C-6430, and PWK30 ensure accurate replacement compatibility.
| Diameter | 6" |
| Length | 10-1/2" |
| Top Style | Open |
| Top Physical Dimension | 1-15/16" |
| Bottom Style | Open |
| Bottom Physical Dimension | 1-15/16" |
| Application | Hot Spring Spas (Watkins), Watkins Mfg/Hot Spring Spas |
| Model | Classic, Models after 1990 |
| Square Footage | 30 sq ft |
