The most popular wound cartridge media by far, the SPECTRUM wound polypropylene offers broad chemical compatibility and good temperature resistance at low cost. With over 50 years proven experience and in a variety of micron sizes, across standard and large diameters, the SWP provides a basic filtration solution perfectly suited for first-stage and general particulate reduction. Whilst newer spun technologies offer higher efficiency and longer life cartridges, wounds still exceed filtration standards in many applications.