The Teros™3 Purifier adds an EF100 housing which includes a 5 stage FD synthetic fiber block filter to the Teros™3 as a pre-filter to provide a high flow filtration of sediment, chlorine, cyst, lead and scale prevention. The Teros™3 is a triple housing system capable of delivering 0.5 gallon per minute flow rates without the need of a storage tank. Includes DIY installation kit which includes fittings, tubing and faucet.