We recently traded campers and I noticed that the AC vents in the ceiling stuck into the ductwork a little over 1".
I removed a vent and noticed the space between the ceiling and the bottom of the ductwork
I used duct tape to seal the area to prevent any cool air from being lost into the attic space.
I cut the vents down by about 1"
Then reistalled the vents.
I didn't have anything to measure the airflow before or after, but, with just my hand it did feel as if there was better airflow.
2008 Fleetwood Discovery 40X
2007 Hummer H3 toad
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