Description The AQUAPLEX.Z LD01-20 cartridge filter and is nominally rated depth, 1 micron cartridge filter, with graded density. The filter is manufactured by VeoliaWater, a div. of the General Electric co. using their proprietary “Z.Plex” filter forming technology. The filter is made from 100% Polypropylene and is 20″ in length, with a 4.5” outside diameter. The filter has a double open end configuration and is meant to fit in AMETEK’s Big Blue and Keystone’s Blue Giant housings. Veolia Material Item Number: 3108172
