A chassis for plug-in modules may be provided with a vented and ducted sub-rack support member. The vented and ducted sub-rack support member may deflect a portion of the air flowing within the chassis through vents in the top surface of the vented and ducted sub-rack support member in order to increase...http://www.google.se/patents/US7355850?utm_source=gb-gplus-sharePatent US7355850 - Vented and ducted sub-rack support member
