From the company that started it all.
If you are looking for an RO/DI cart for the occasional window job at an economical price, the Tucker® Cart is a great option.
Consisting of a 2.5"x10" carbon pre-filter, a 40" RO membrane, and a 4"x10" DI post-filter for polishing off the RO water.
If interested in a system designed for all day every day usage, take a look at the H2Pro.
*There is a new metal bypass valve rather than the plastic valve as well as a pressure gauge for the RO housing to easily tell the operating pressure of each location.