Filbur Marquis Spa Cartridges

This replacement 35 sq ft hot tub filter cartridge is compatible with Marquis and Cal Spa hot tubs. These filters meet or exceed the original 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.

This is a recommended replacement for Cal Spa / Marquis 370-0242 Filter Cartridges.