PP membrane filter Features:1) Three kinds of materials PP cotton. Glass ... ) Material: PP, cotton, glass fiber2) Core: polypropylene sus3043) Filtration rate: 1-100 micron4) Filtration length: 5", 10", 20", 30", 40", 50"5 ... , 30mm 6) Outer diameter: 50mm, 60mm, 63mm, 115mmPacking: carton PP Membrane Filter