Aquasana ® AQ-4100 Deluxe Shower Water Filter System with Adjustable Showerhead Aquasana AQ-4100 Shower Filter was voted “Product of the Year” by Cosmetology Today Magazine! This unique 2-Stage shower water filter is US Patented, has a high filtering capacity and is easy to install. No tools necessary, although pliers may be helpful. The granular copper/zinc and coconut shell carbon replaceable water filter effectively removes 99% of Chlorine, reduces VOC`s, heavy metals and other chemicals, as well as enhancing pH. Stage 1 removes chlorine and enhances pH balance with a natural copper/ zinc mineral media called KDF-55D. The second water filtration stage uses a carbonized coconut shell media for the removal of synthetic chemicals and VOCs that vaporize and can be inhaled or absorbed through the skin potentially causing adverse health and cosmetic effects. Without the harsh influences of chlorine you’ll notice significant cosmetic benefits. Also by removing chlorine and other chemicals found in tap water, you eliminate health risks related to inhalation and skin absorption of these chemicals… now known to be a significant source of exposure to harmful VOCs (volatile organic chemicals). Your shower water will feel better, and be better for you. The Aquasana Shower Water Filter provides minimal pressure loss and no change in showerhead height. It`s like showering in natural spring water! The easily replaceable water filter lasts 10,000 gallons, about 6 months, and installs simply. Comes complete with a deluxe adjustable massage-showerhead. Aquasana AQ4100 Shower Filter Installation Instructions included.