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Old 05-04-2017, 01:30 PM   #7
NorCalC20LWB
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Join Date: Mar 2015
Location: Bigfork, MT
Posts: 466
Re: A/C center dash vent supply hose

My 72 has the "twin feed" to the center vent. My understanding is that if you plug one side then the air flow goes to mostly one side, either driver or passenger. It was a bit of a PITA to get both sides hooked up, but I do like the more even air flow.
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