The Answer Plus - 20in Drop In Slim Line Water FilterCombining premium Catalytic Carbon Block filtration ( 5 microns) with the revolutionary FILTERSORB CT technology, offering a powerful 50: 50 mix of FILTERSORB SP3 and FILTERSORB SPA for unparalleled water treatment Removes: Effectively removes chlorine, chloramines, sediment, odors, and harmful by products while protecting against both cationic and anionic scale buildup. It addresses temporary (limescale) and permanent hardness (up to 15 grains)