2004 1500 Crew Cab interior question

Looking to build a subwoofer box to put behind the rear seats. Looks like there is plenty of space, but there is a black "tube" looking thing that comes out from the side panel and extrudes behind the rear seat a bit. Haven't taken off all of the panels to see what it is, wondering if anyone else may already know?

Reply to
Ihatespam
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Tore it apart. They lead to the backside of the cab, between the cab and bed. Must be to allow air out of the cab.

Reply to
Ihatespam

Yeah, I think they are like, one-way valves that expell air when you've got the AC or heat running.

-marc

Reply to
Marc Westerlind

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