The DuPont Universal Whole House Carbon Wrap 2-Phase Cartridge PFC8002 comes in a 2-Pack and filters up to 15,000 gallons for home or office. Includes 2 universal 10-inch cartridges that fit all DuPont Whole House Water Filter Systems and most other brands of standard-size systems. Improved taste results from both from spun-wound polypropylene and carbon filtration phases. Lasts up to 3 months. 5 micron