fan

air conditioning box fan cooling fan - 6210407424
By Unknown
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About 20 percent cooling, and 80 percent extensive, I'd wager.

computer repair fan holding it up - 5165810176
By LandP
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From the submitter:

Someone I know has had their pc bungee corded to a running window fan all summer. I asked them about what they do when it rains, when the wind blows in the rain, and they responded that it never occurred to them. They did finally take it down for the hurricane.