Dimensions: Fits most 10 inch x 2.5 inch reverse osmosis systems - 5 pack of 5 micron coiled water filter. Universal water filter replacement for all standard 10 inch RO systems and whole home applications. Quality Filtration: Made from 100% pure polypropylene microfibers. The string wound water filter features a deep bed filtration design with a honeycomb structure that is dense inside and sparse outside. The string wound sediment filter reduces sand, scale, rust, sediment, and particles by 99.99%. High capacity: The filter can process 20,000 to 30,000 gallons depending on water quality. Replace every 3 to 6 months for optimal performance based on usage. Multiple Benefits: Offers high filtration precision, large flow rate, low pressure drop, high compressive strength, high dirt holding capacity, non-toxic, tasteless, and no secondary pollution. Excellent performance: String wound filter element uses polypropylene microfibers tightly wound on a porous core following a specific manufacturing process. The honeycomb structure with a dense interior and outer layer provides effective depth filtration, removing suspended solids, rust, particles, and other impurities from water.