Additional Details ------------------------------ Product description: Osmonics has extended its patented* blown microfiber technology to meet the market requirements for a pure polypropylene depth filter with exceptional dirt-holding capability. This translates to longer life and fewer change outs than existing string-wound or resin-bonded filters. The resulting product is an exceptional value for general applications where long-life, high purity & low change out frequency is required.Specifications: Length: 4 7/8 inch Inner diameter: 1 inch Outer diameter: 2.5 inch Material: Polypropylene Micron Rating: 20 micron