OUTSTANDING ADVANTAGES - Compared to melt blown filter cartridge, string filter is the ideal choice to filter water with high sediment content. FOUR times dirt-holding capacity, DOUBLE flow rate, and LONGER service life than PP sediment filter. STANDARD DIMENSION - Universal string wound filter cartridge fits most 10 inch filter housings, as prefilter for reverse osmosis (RO) systems and water filtration, as well as a variety of commercial and industrial applications - 6 Pack. FUNCTION - Removes 99% of particles, silt, sand, rust, and other undissolved impurities in water. As the first line of defense in the filtration system, helps protect water-using appliances and plumbing, improves water quality and taste. FEATURES - Unique honeycomb structure increases dirt holding capacity. Polypropylene material center tube enhances pressure resistance. 100% Polypropylene material, non-toxic and tasteless. LIFETIME - For optimal performance, it is recommended to replace TWO or THREE times a year depending on the water source and usage. Recommended change interval when differential pressure reaches 30psi (2.1bar). Color: White Material: Cotton thread Size: 25.4cm Package Contents: 6 x Water Filter Cartridge Only the above package content, other products are not included. Note: Lighting and display settings may cause slight color differences between the image and the actual product. Measurement allows an error of +/- 1-3cm.