Re the Deletion, because @gparyani has insisted on explanations from those who voted for close via PMs:
For the reasons detailed in comments and others this question should be deleted, but additionally:
- It will not be answered to OPs satisfaction, though the correct answer has already been given by several, and first by the very first comment made on that question.
- Its continued existence on the site is just clutter and may dissuade future visitors who have more specific and clear (probably mostly simpler, but I don't pretend to know what every possible question about case airflow could be or whether it can be presented in a way so as to be on topic here).
I do not see value in the question remaining, and light of SU's overall goal of attempting to be a compendium of good questions and good answers, this question which cannot be answered well (taking a broad definition of "well" here, see above) should be deleted.
