Enjoy greater peace of mind about the water you drink at home. The KOHLER® Aquifer water filtration system effectively reduces contaminants including lead, mercury, chlorine, and pharmaceuticals in your cold water. While many other systems use coal-based media filters, the Aquifer filter uses ground coconut shells, making it more eco-friendly. Under-sink installation is fast and easy, and the compact Aquifer system fits alongside garbage disposals and household items stored below the sink. Kohler®, 77685-NA, Water Filtration System, Series: 77685, 0.85 gpm Flow Rate, High Impact Plastic Filter, 33 to 100 deg C, 60 psi Working, 3 in Diameter, 12-1/6 in Height