Armed Ferret Posted April 20, 2020 Share Posted April 20, 2020 On 8/26/2019 at 7:22 PM, lovingHDTV said: I tested the hole and can't discern which direction the air is flowing. It isn't extreme in any condition. I'm not too worried as it has been functioning for 12 years this way. It has been on my list to block off, but obviously not very high up on the list A great cheap way to determine airflow is incense sticks. Heres a video on it. Quote Link to comment
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