This package contains two sets of 4-pack Hydronix SDC-25-2005 filters, totaling eight cartridges. Each 5-micron sediment filter effectively captures sand, silt, and rust for clean water. Constructed from thermally bonded polypropylene, they resist chemicals and ensure structural integrity. Designed for both residential and commercial systems, they fit standard 20-inch housings. Their gradient density allows for higher dirt-holding capacity and reduced maintenance frequency. These filters maintain stable flow rates while preventing clogging in downstream components. Ideal for pre-filtration stages in multi-stage systems or whole-house setups. The pack offers long-term supply and cost efficiency for large installations. Each cartridge supports extended usage cycles with reliable purity. Perfect for ensuring continuous clean water with minimal effort.