Is it a bad idea to put a dust filter on top exhaust fans?

gab_th

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Also, is it a bad idea to put two dust filters on intake fans? I'm asking because my case seems to have a dust filter for the 2 front intake fans, but it doesn't seem removable, so I'm thinking of taking the dust filter from the 2 top exhaust fans and putting it on the front of the case for the 2 intake fans.
 
Solution
Yes that is a bad idea, any dust trying to get through there is going out of the case. Dust filters on exhaust fans would keep the dust in the case.

D4V3_G

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[strike] Bad idea? No. It will only restrict the airflow, but it it pointless since its blowing air out and not in. [/strike]On the front intake fans it is a good idea to put dust filters, as most of the airflow comes that way anyway, if not all of it.
 

D4V3_G

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Good point. I withdraw my answer.
 

gab_th

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And is it a good idea to put that unused dust filter at the front of the case, considering that the front already has a non-removable filter?