Remove Rust, Impurity, and Chlorine and Contaminants. Super Quality by Compact Sized Multi Layers Filter combined with ACF and Sediment(10 times) Free from the contamination and dust by the antibiotic system works The life span maximized with the Ultra-Graded Density None of the lint by using the filtration spun-bonded Filter life is up to 1,500 gallons(5,000 litters)