Pack of 4 filters for reverse osmosis compact

Pack of 4 cartridges or filters qs compact reverse osmosis type " cs" . ,use these parts the compact osmosis , ultra models cs , cm cs , cs ecobox , sintra, magma cs , etc. . ,for maintenance are required sediment cartridge cs two carbon cartridges gag and special silver unit postcarbón cs thread m- 1/4 " .