about this item Size: Fits Most 10" x 2.5" Reverse Osmosis Systems - 3 Pack Micron Water Filters.Universal water filter replacement works with all standard 10 inch and whole house RO systems.Premium Filtration: Made from virgin polypropylene microfiber.The wound water filter has a deep filtration function with a honeycomb structure that is dense inside and sparse outside.The wound sediment filter reduces sand, scale, rust, silt and particles by 99.99%.High Capacity: The filter can filter 20,000-30,000 gallons depending on water quality.The average household is recommended to replace it every 3-6 months for optimal performance, depending on usage.Multiple advantages: It has the advantages of high filtration precision, large flow rate, small pressure difference, high compressive strength, high pollution resistance, non-toxic andtasteless, and without secondary pollution.Excellent performance: The wound filter element is composed of polypropylene microfibers tightly wound on a porous frame using a specific process.The honeycomb structure is dense on the outside and dense on the inside.With good depth filtration effect, it can effectively remove suspended solids, rust, particles and other impurity liquids.