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Old 07-10-2020, 10:02 PM   #1
GA Cowboy
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Join Date: Apr 2016
Location: Kennesaw, Georgia
Posts: 47
Opening under dash

Can anyone tell me what this opening under the control box? under the dash is? The AC is blowing out about 60 degrees but 40 on this vent. Thanks.
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1972 GMC 1500
1/2 Ton, LWB, Fleetside, 350, Automatic, 3rd Owner.
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