Computer chassis configured for controlled airflow including at least one component board; a segmented curtain suspended across a region of airflow in the computer chassis above the component board; and at least one component mounted on the component board displacing at least one segment of the segmented curtain creating an airflow channel under the displaced segment. Segmented curtains for controlling airflow in a computer chassis including one or more segments capable of being displaced by components mounted on a component board in the computer chassis; and one or more fasteners for suspending the segmented curtain across a region of airflow in the computer chassis. Controlling airflow in a computer chassis including inserting a component board into the computer chassis; displacing, a segment of a segmented curtain thereby creating an airflow channel; and providing airflow through the airflow channel created by the displacement of the segment of the segmented curtain.