Complete filter cartridge kit for OsmoFLOW 200 water purification system containing 1 braided sediment filter, 1 smooth sediment filter, 1 compressed carbon filter and 1 coconut carbon filter. The sediment filters remove larger particles, the carbon filter removes chlorine and chemical pollutants, while the finishing cartridge eliminates unpleasant odors and tastes. Replacement recommended every 12 months. Replace the reverse osmosis membrane separately every 18 months.