The Omnipure E5615-P is a 1 Micron Carbon Block Lead Reduction Water Filter with Phosphate Scale Inhibitor. This filter also features a universal cap that fits all permanent existing heads which makes this filter easy to install and remove. This filter also aids in the removal of scale, taste, odor and chlorine. Additional Details ------------------------------ Product description: The Omnipure E5615-P is a 1 Micron Carbon Block Lead Reduction Water Filter with Phosphate Scale Inhibitor. This filter also features a universal cap that fits all permanent existing heads which makes this filter easy to install and remove. This filter also aids in the removal of scale, taste, odor and chlorine.