Culligan Whole House Water Filter Cartridge 2-Pack is designed to provide comprehensive filtration for your entire household water supply. These cartridges deliver Level 4 filtration, effectively reducing sediment, rust, scale, dirt, coarse sand, fine sand, extra fine sand, and silt. Made from spun polypropylene, they premium filtration capable of capturing particles as small as 1 micron, ensuring even the finest impurities are removed from your water. Each cartridge has a lifespan of 2 months or 8,000 gallons, though actual filter life may vary depending on water quality and usage. Regular of these cartridges helps maintain optimal filtration performance, providing cleaner, clearer, and better-tasting water throughout your home. Model Number: P1