Middle Atlantic has posted a white paper on thermal management, i.e. how to keep your gear cool. It is a 49 page PDF file and is pretty comprehensive, including lots of diagrams.
Go to
www.middleatlanic.com and then click on the Resources tab. You have to fill a form, but I just put in some bogus info
There have been a number of posts about cooling...this should go a long way to helping people answer their questions.
Now if Middle Atlantic would just lower their prices on custom fit shelves...
Regards,
Anthony