About this item Size: Fits most 10" x 2.5" Reverse Osmosis Systems - Pack of 3 Micron Water Filters. Universal water filter works with any standard 10-inch whole house RO system. Premium Filtration: Made from 100% virgin polypropylene microfiber. The spun-wound water filter has a deep filtration function with a dense honeycomb structure inside and a sparse outside. Spun-wound sediment filter reduces sand, scale, rust, silt, and particles by 99.99%. High Capacity: Filters can filter 20,000-30,000 liters depending on water quality. The average household is recommended to replace it every 3-6 months for optimal performance, depending on usage. Multiple Benefits: It has the advantages of high filtration accuracy, large flow rate, small pressure difference, high pressure resistance, high pollutant resistance, non-toxic and tasteless, and no secondary pollution. Excellent Performance: The wound filter element is made of polypropylene microfiber tightly wound on a porous frame through a specific process. The honeycomb structure is dense on the outside and dense on the inside. With good deep filtration effect, it can effectively remove suspended particles, rust, particles, and other polluting liquids.