- Jumbo pleated filter cartridge of polypropylene- Thermal bonded construction ensure integrity- Constructed of 5-layer grade density filter medium- All materials are FDA listed for food contact useMaterials Polypropylene filter medium Polypropylene cage, core and adaptorsApplications Pre-filtration of DI/RO water Paints and Inks Foods and beverages CoatingsCartridge specifications I.D/O.D 28mm / 123mm Length 10" - 40" Grade 0.5micron - 20micron Cartridge style : DOE