Unicel-Sundance Martec Cal Spa Filter Cartridge C-4305


-Measure approximately 14-7/8 inches in length.

- For 50 Sqft

-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.