A container that holds rack mountable electronics equipment includes a plurality of rack enclosures and a corresponding plurality of enclosure cooling units. Each rack enclosure is movably mounted in the container such it can move from a position abutting a front of an enclosure cooling unit to a maintenance and access position spaced apart from the enclosure cooling unit. Each enclosure cooling unit is capable of providing varying amounts of cool air to the rack enclosure it abuts, so that the interior of each rack enclosure can be maintained at a different temperature.