A rack has a frame for supporting one or more electronic components. A front panel and a rear panel are attached to the frame. At least one of the front panel and the rear panel comprises a vent having at least one movable louver configured to vary airflow through the vent.

 
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< Defroster for heat exchanger and fabrication method thereof

> Heat-resistant assembly for protecting boiler tubes and method of assembling same

> Method and apparatus for inhibiting ice accumulation in HVAC systems

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