Nature's Sunshine Natures Spring Stage 3 Water Purifier Reverse Osmosis Post Filter

Replaceable GAC (granular activated carbon) post filter for both the older CA and PA Nature’s Spring reverse osmosis units. This post filter should be replaced every 12 months to ensure the proper reduction of unwanted organic

Part number 1734 , 12.5 cm long , 1 micron, replace every 12 months