In general, in one aspect, the disclosure describes an apparatus to redistribute airflow throw slots of a chassis that houses boards. The apparatus includes at least one restriction region to limit airflow therethrough. The apparatus further includes an open region to allow airflow to pass therethrough. At least some of the airflow limited by the at least one restriction region will flow through the open region. The apparatus also includes a connection mechanism to connect to a chassis.

 
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> Thermal management for hot-swappable module

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