PP PP cotton wick filter element 20-inch 10-inch cartridge PP pp cotton filter cotton filter ◆ 1μ5μ, 110g / 125g ◆ Material: Polypropylene (PP material) ◆ Features: Spiral fine lines indentation, add more filtration area, multi-layer Depth structure, pollutant carrying capacity ◆ Size: 10 inch (63mm * 33mm * 235mm), 20-inch (63mm * 33mm * 470mm) or special specifications ◆ role: the filtered water is greater than 5 microns in diameter micro mud, rust, bacteria and viruses, chlorine, organic pollution minerals and other debris. ◆ replacement time: 3-6 months, depending on the local water quality and water availability. ◆ Compatible Models: for RO water, ultrafiltration water purification machines and other equipment in level 1, level 2.