Dimensions: Fits most 10 inch x 2.5 inch reverse osmosis systems -5 pack of 5micron coiled water filter. Universal water filter replacement fits all standard 10 inch and whole house RO systems. Quality Filtration: Made from pure 100% POLYPROPYLENE microfibers. String Wound Water Filter has deep bed filtration function, which has dense honeycomb structure inside and sparse outside.String Wound Sediment Filter can reduce 99.99% sand, scale, rust, sediment and particles. High capacity: The filter can filter 20000 to 30000 gallons depending on water quality. Suggest replacing every 3-6 months for the average household for optimal performance based on usage. Multiple Benefits: It has the advantages of high filtration precision, large flow rate, small pressure difference, high compressive strength, high pollution tolerance, non-toxic and tasteless, and without secondary pollution. Excellent performance: String wound filter element adopts POLYPROPYLENE microfibers to be tightly wound on the porous frame by specific process, the honeycomb structure with sparse outside and dense inside, it has good filtration effect in depth and can effectively remove solid suspensions, rust, particles and other impurities in the liquid.