Dust filter for the top exhaust fan?

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Timjan

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Jan 1, 2017
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So I wonder if I should have a dust filter on the top when the fan is used for exhaust???

Is it bad to have a dust filter there or not?
 
Solution
As others suggested, the filter isn't really needed if using the top fans as exhaust. It may serve a purpose for the pc when it's off by preventing dust from falling straight into the tower. In use though it's only going to restrict the air the fans are trying to blow out of the case.

I'm using an enthoo pro and it came with a top filter and with my top exhaust fans I could feel air flowing back against my hand inside the case. After removing it airflow improved. Filters can be more restrictive than you think just by looking at them, even the mesh screen type commonly used on modern cases.
As others suggested, the filter isn't really needed if using the top fans as exhaust. It may serve a purpose for the pc when it's off by preventing dust from falling straight into the tower. In use though it's only going to restrict the air the fans are trying to blow out of the case.

I'm using an enthoo pro and it came with a top filter and with my top exhaust fans I could feel air flowing back against my hand inside the case. After removing it airflow improved. Filters can be more restrictive than you think just by looking at them, even the mesh screen type commonly used on modern cases.
 
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