OUTSTANDING ADVANTAGES - Compared to melt blown filter cartridge, string filter is best choice to filter water with lots of sediment. FOUR dirt-holding capacity, DOUBLE rate, service life than pp sediment filter. STANDARD DIMENSION - universal string wound filter cartridge fits 10 inch filter housings,as prefilter of reverse osmosis(RO) systems and water filtration, as as variety of commercial and industrial applications - 6 Pack FUNCTION - Remove 99% particles, silt, sand, rust and other undissolved particles in dirty water. As the first line of defense in the filtration system, your water using appliances and plumbing for water, water quality and taste. FEATURES - Unique structure increase dirt holding capacity, polypropylene material center tube increase pressure resistance.100% Polypropylene material, non-toxic and tasteless. LIFETIME - For better water quality, recommended replace TWO or THREE a year, depending on the quality of the water source and application type. Recommended change out differential pressure is 30psi(2.1bar). Colour:White Material:Cotton thread Size:25.4cm Package Contents: 6* Water Filter Cartridge Only the above package content, other products are not included. Note: Light and different displays may the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.