Fits Vertex Filter Replacement Kit FK-101 Pure Water Machine PT-4.0/5  Fits Vertex Filter Replacement Kit FK-101 Pure Water Machine PT-4.0/5 Compatible Kit Compatible to Vertex Filter replacement kit for Model PT-4.0/5, Includes: 1 sediment filter cartridge          1 carbon block filter cartridge   1 carbon block filter cartridge  1 GAC filter cartridge 1 filter wrench 3 «O» rings For the compatible replacement RO membrane MF-4009 see our other items. Listing and template services provided by inkFrog