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

Replaceable “5-micron”, sediment pre-filter for both the older CA and PA Nature’s Spring reverse osmosis units. This pre-filter should be replaced every 12 months to ensure the proper reduction of unwanted sediment.

Part number 1735 , 12.5 cm long , 5 micron , replace every 12 months.