50 sqft 6CH-940 Antimicrobial Filter Cartridge ft. M-Pleat Design

These filters are infused with Antimicrobial material protection to inhibit the growth of bacteria upon the cartridge and extend the filter's life span. An additional silver-ion is imbued in the fabric and plastic of the filter, which acts as a natural disinfectant against micro-organisms and harmful bacteria. Spend less time cleaning your filters and more time enjoying your spa!