The Omnipure E5385 is an All Phosphate Scale Inhibitor water filter. This filter features easy change caps that make this filter really easy to remove and install. This filter aids in the removal of scale and prevent scale build-up in your pipes and on your fixtures. Additional Details ------------------------------ Product description: The Omnipure E5385 is an All Phosphate Scale Inhibitor water filter. This filter features easy change caps that make this filter really easy to remove and install. This filter aids in the removal of scale and prevent scale build-up in your pipes and on your fixtures.