Help save the environment with this eco-friendly "green" filter that is an original equipment replacement. Compared to conventional carbon-based filters, Swift Green filters are environmentally friendly. Conventional carbon filters are produced by a burning process called open pit charring which release pollution and greenhouse emissions into the air. Swift Green filter components are produced with a new technology that carbonizes dried coconut shells in an enclosed self-sustaining system while capturing and converting the emissions into useful thermal energy. The filters are NSF Certified which ensures consumers clean and safe drinking water. The filters are tested and certified by NSF International to NSF, ANSI Standard 42 for the aesthetic reduction of chlorine taste and odor. As well as nominal particulate Class I and Standard 53 for the reduction of Atrazine, Lindane, Lead, Turbidity, and Cysts. This filter keeps a healthy level of fluoride, a water additive that promotes strong teeth. Swift Gr Type: Accessories Installation Type: Built in Energy Star Compliant: Yes