Would using a air filter for an AC work as a side panel?

FluffyMyNameIs

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Nov 30, 2013
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My computer isn't getting enough air so I have to use a desk fan to blow air on everything until I can scrounge up 300+ USD to get a new case and PSU. That means I have to take off the side panel, and that means dust! I'm considering getting a thin air filter that's used for an AC to keep the dust out. What're your thoughts?
 

FluffyMyNameIs

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Nov 30, 2013
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Well the computer is an HP Pavilion Elite 580t so the case isn't the best and everything is kind of cramped in there. I have it in a huge open area so I'm not sure to be honest.