Cal Spa / Sundance 50 Sq Ft Filter Cartridge CL-2810, 6540-497 - FC-1617

These replacement spa and hot tub filter cartridges are identical to Cal Spa part number CL-2810, Sundance part number 6540-497, Martec / Sonfarrel part number 220152, Sonfarrel / Advantage part number ELE-25, Filbur part number FC-1617, Unicel part number C-4305 and Pleatco part number PMT50. These filters are 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.

  • Replaces Cal Spa cartridge number CL-2810
  • Replaces Sundance cartridge number 6540-497
  • Replaces Martec/Sonfarrel number 220152
  • Replaces Sonfarrel/Advantage number ELE-25
  • Length: 14-7/8"
  • Diameter: 4-15/16"
  • Top: 2-1/8" Opening
  • Bottom: 2-1/8" Opening
  • 50 Square Feet
  • Filbur part number FC-1617
  • Unicel part number C-4305
  • Pleatco part number PMT50
  • Cross Reference: 46085
  • This is not an original Cal Spa cartridge

Fits spas from the following manufacturers:
Advantage Electric, Cal Spas, Dolphin Spas, Martec, Pageant Spas, Sonfarrel, Spas West, Sundance Spas, Sweetwater


To clean your spa 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 spa filter per your manufacturer’s instructions.

More Information
Delivery Time 2-5 Business Days
Manufacturer Pleatco
Technical Specs

Length: 14 7/8"
Diameter: 4 15/16"
Top: 2 1/8" Opening
Bottom: 2 1/8" Opening
50 Square Feet

SKU APCC7151 / PLE-051-9242
Manufacturer Part # 6540-497
Product Features

**** These filter cartridges measure approximately 14-7/8 inches in length. To ensure you are ordering the correct filters please measure your existing filters for a match.****

This replacement hot tub filter cartridge is compatible with and replaces the 50 Sq Ft Cal Spa CL-2810, Sundance 6540-497 and Martec 220152 Filter Cartridges. These filters meet or exceed the original spa filters 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.
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