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Old 05-01-2019, 08:12 AM   #6
Geof3
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Join Date: Feb 2017
Location: CO
Posts: 989
Quote:
Originally Posted by Paul View Post
At 3:10 states allows 70% airflow pass through.

https://www.youtube.com/watch?v=XB-kqgjUb5g
Interesting. I'm not sure I would want ANY airflow restriction on purpose. Given the crap that already gets in the rads, perhaps its a wash? I do try to clean mine a couple times a year. The more flow the better IMO.
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