Quote:
Originally Posted by Twisty
Bugs directly on or in the rad affect air flow and cooling.
Screening keeps the bugs off the surface and full air flow is maintained.
Using metal screen can prevent rocks or other debris from damaging the rad also.
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True but the net will also restrict air. You would need the holes in the net to be big enough so enough air gets through. So it they are to big bugs will still get it defeating the purpose.