Patent ID: 7400501

Claim:
An apparatus, comprising: an enclosure for containing components of a system, the enclosure including a front panel, a rear panel, a top panel, a bottom panel, and two side panels; an air moving device for passing air through the enclosure; a vented cover affixed to the enclosure and abutted against a selected one of the panels having an airflow aperture, the vented cover including a pair of cross-flow ventilation ducts, wherein one of the cross-flow ventilation ducts crosses the other of the cross-flow ventilation ducts so that in an intermediate cross-section of the vented cover air moves in one of the cross-flow ventilation ducts in a direction substantially opposite to that in the other of the cross-flow ventilation ducts, and wherein at least a portion of each of the cross-flow ventilation ducts includes an acoustic noise reduction lining.