... Filter Cartridges take advantage of our innovated continuous multi-extruded technology and the latest melt blowing micro- ... ConstructionPP series cartridges, self-bonded with no chemical binder.Multi-Layer structure (fibers fineness varying from inner to outer ... RETENTION RATINGS (μ m)nominal 1, 5, 10, 20, 30, 50, 75, 100 micronSPECIFICATIONInner diameter : ,28mm,30mmOuter diameter: 40mm115mm Length ...