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Old 07-29-2020, 08:34 AM   #20
DQDick
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Join Date: Jun 2011
Location: Wilsey
Posts: 18,799
M.O.C. #11455
When you have the vent covers off to remove every other fin, take the screws out of the housing and remove it also. You'll find it extends an inch or more into the duct restricting the air flow. Trim it down to only the depth needed and then reinstall it and snap the cover back on.
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