Replacement filters for this system. Full 5 stage RO Filters Set 100 GPD 192217348357.Pre and post Filter Set: Sediment, GAC, CTO, inline Carbon 191729905484. Filter cartridges should be changed every 6-12 months under domestic conditions. Filter life varies and depends on the water source quality. The item "5 Stage Kitchen Home Drinking Reverse Osmosis System With 16 Water Filters 100 GPD" is in sale since Thursday, March 11, 2021. This item is in the category "Home & Garden\Kitchen, Dining & Bar\Small Kitchen Appliances\Water Purification\Water Filters".osmosis" and is located in Niagara Falls, New York. This item can be shipped worldwide.