Polypropylene sediment filter elements. Compatible with various industrial filter housings and whole house filter housings Function-remove 99% of rust, silt, sand, iron and other undissolved particles in dirty water. As the first line of in the filtration system, use appliances and pipes to protect your water to get cleaner water and improve water quality and taste. Multi-layer structure: Three gradient density layers enhance the performance of the filter elements and have a higher dirt holding capacity than similar-sized sediment filters. Replacement: In order to obtain better water quality, it is recommended to replace it 2-3 times a year, depending on the quality of the original water source and the type of application. Multiple Advantages: The filter can filter 20000 - 30000 gallons depending on water quality. wound filter elements adopts POLYPROPYLENE Microfibers to be tightly wound on the porous framework according to a specific process, The honeycomb structure with sparse outside and dense inside,It has the advantages of high filtration accuracy, large flow rate, small pressure difference, high compressive strength, large pollution tolerance,tasteless, and no secondary pollution. size:Length: 508mm, Aperture: 5m, Outer diameter: 60mm Material:Polypropylene colour:White Package Contents: 6 x Water purifier filter