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Rainbow DSF 35 Sq Ft Filter Cartridge Set FC-2386 - Set of 2

Availability: In Stock

Regular Price: $37.99

Sale Price $29.99

You Save: $8.00  (21%)

Quick Overview

****These filters are sold as a set of 2 and each measures 4-5/8 inches in length. To ensure you are ordering the correct filters please measure your existing filters for a match.****

This set of 2 filter cartridges replace Rainbow (Pentair) part number 17-2606 and are used by several spa and pool manufacturers.  These filters meet or exceed the original Rainbow filter cartridges that came with your hot tub and are made from Reemay spun-bound polyester pleated filter media that features anti-microbial technology which prevents microbes such as mold, fungus, and bacteria from growing on your filters.

This spa filter cartridge is a recommended replacement for the Rainbow 17-2606 Filter Cartridge.


These replacement filters are identical to Rainbow part number 17-2606, Filbur part number FC-2386, Unicel part number C-4401 and Pleatco part numbers PRB17.5SF-PAIR and PRB12. These filters are also constructed with thermally bonded polyurethane caps and a punched PVC pipe core that will ensure consistent water flow through your filters along with the durability you depend on.

  • Set of 2 Cartridges
  • Diameter: 4-15/16"
  • Length: 4-5/8"
  • Top Open Hole: 2-1/8"
  • Bottom Open Hole: 2-1/8"
  • Filter Area: 35 sq. feet
  • Fits Rainbow DSF 35 Sq Ft
  • Filbur part number FC-2386
  • Unicel part number C-4401
  • Pleatco part number PRB17.5SF-PAIR
  • Cross Reference: FC-2340,  2945000, 609505, 17-2021, 17-2047, PRB12, C-2612, 645544023407
  • This is not an original Rainbow/Pentair cartridge

Also fits spas from the following manufacturers:
After Hours, Apollo, Aqua Tech, Arizona Pacific, Beachcomber, Beachcraft, Canspa, Caribbean, Catalina, Clearwater, Diamond Back, Discovery, Dynasty, Ester W, Freedom, Gatsby, Grecian, Hydro, Legend, PDC, Sundance, Thermo


To clean your pool filter remember these 4 simple steps; rinse, soak, rinse, dry. Rinse your filter out with a garden hose to remove any debris or dirt still attached to your filter. Next, soak your filter in a filter cleaner solution overnight, then remove your filter from the solution and rinse with a garden hose. Set your filter in a sunny location and let it air dry completely. Finally, reinstall your pool filter per your manufacturer’s instructions.

Additional Information
Delivery Time 2-5 Business Days
Manufacturer Filbur
Technical Specs

Diameter: 4-15/16"
Length: 4-5/8"
Top Open Hole: 2-1/8"
Bottom Open Hole: 2-1/8"
Filter Area: 35 sq. feet

SKU APCC7047 / PLE-051-9173
Manufacturer Part # 17-2606