... supply all kinds of filter ( pleated, spun, wound, yarn, BB type, carbon), and PP yarn. We tailor made as per your need size ... Yarn filter offer true depth filtration with high dirt ... RATINGS (μ m)Nominal 1, 5, 10, 20, 30, 50, 75, 100 μmSPECIFICATIONInner diameter: 28mm, 30mmOuter diameter: 40mm-115mmLength: 120mm-1270mm PP Yarn Filter