Utter Filtration 0.2 Micron Absolute Filter Pleated Polypropylene, Nominal Size 2.5″ diamater x 10″ longActual Size 2-5/8″ x 9-7/8″Double Open End (DOE) All polypropylene fabrication so nothing to leach out – filtration media, support media, end caps, center core, outer support cage all polypropylene Silicon Seals0.2 Micron Filtration with 99.5% removal