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The Aries AF-20-3318-BB fits the following water filter housings:
The Aries AF-20-3318-BB 20" Phosphate Filter is a replacement water filter that can be used as a post filter in a reverse osmosis water filtration system. This 20" filter uses phosphate as a scale inhibitor when signs of corrosions are present. This scale inhibitor filter is constructed with phosphate crystals that prevent the buildup of lime and scale on pipes and glass. This phosphate water treatment cartridge can also be used in areas with aggressive water and is compatible with water processing equipment.
Aries AF-20-3318-BB 20" Phosphate Filter specifications: