FD411-4 is a part of Filtercon, a filtration system designed to process and purify a variety of liquids. It is a four-stage, high-level process filter containing a variety of media, including activated carbon and other proprietary media, that removes suspended solids, odor, heavy metals, organic and non-organic oils, volatile organic compounds (VOCs), and chlorine. It also has the ability to reduce bacteria levels. The FD411-4 meets the requirements of NSF/ANSI Standard 58 for Class I Turbidity, NSF/ANSI Standard 53 for Class V VOC Reduction and NSF/ANSI Standard 372 for Lead Free Materials.