The ICS, which is assembled within the footprint of a standard aisle, is constructed with a tubular steel frame, which meets seismic NEBS Zone 4 standards. It accepts a variety of Wright Line’s end-of-row doors, including café style and single-swing models. The unit’s aisle ceilings are constructed of a light-weight steel frame and clear Lexan panels allowing ambient room light to illuminate the ICS aisle. This also eliminates the need for energy-consuming supplemental lighting. The ceiling accepts 2 ft by 2 ft adjustable chimneys which can be added anywhere on the ceiling structure as IT loads increase. Other features include cold aisle compatibility, containment integrity, and the ability to support virtually any brand of server or network rack.