The EZ Pure RO/DI system consists of 2 RO membranes, a carbon/sediment filter, and a di filter. Just hook it up to tap water, close the valve, and go. Weighing in at only 45 lbs which makes it a small and compact solution. Just hook it up to tap water, close the valve, and go. It doesn’t require any tools for changing out your filters when you’re out on the job. This unit comes with a handle attached for easy carrying.