The EZ Pure RO/DI caddy is an easy to use purification unit for those that are budget-conscious. It's a great entry level piece of equipment. It includes 2 RO membranes, a carbon/sediment filter, and a di filter. This unit can produce purified water on tap water pressure alone. Hook it up to tap water, close the valve, and go. Weighing in at just 45 lbs, it is a light weight and portable solution. Handles included for easy carrying. Another great option are the EZ Pure poles.