Rack Mount Ducted Evaporator EC (RMD-EC). It has the same functions as an RM but now designed to be ducted! It is designed to have a short duct run of about 5-8 feet. It also can be on the exterior of the room. You can get an optional secondary drain pan for extra security. Comes standard with an energy-efficient motor that is DOE compliant and made for small to medium-size rooms. Good for small crawl spaces. It has .1 inches of static available, with a potentiometer to control CFM. Made to control temperature and humidity for a variety of specialty products.