A/C duct work

[Brantlyj]

It’s a warm day so thought I would knock out a few projects. One was to tape up the duct work. Was presently surprised at how well done it was. Always room for improvement though.

The duct work extends beyond that last vents. I e noticed people talking about plugging the excess. What is everyone using?

[chuckster57]

As long as your trailer doesn't have the new "race track" design, you should be fine. I plugged mine at just past the last vents front and rear and it made a difference

[Brantlyj]

Originally Posted by chuckster57

As long as your trailer doesn't have the new "race track" design, you should be fine. I plugged mine at just past the last vents front and rear and it made a difference

What is the race track design? How do you tell? The duck work was/coated with a dense black foam. Trailer is a 2019

What material did you use to plug it?

[chuckster57]

I doubt yours is? Is your trailer 30A service and only wired for 1 AC unit? If so then it’s probably not the racetrack. I used foam pieces, cut them a little large and then wedged them in.

[Brantlyj]

Originally Posted by chuckster57

I doubt yours is? Is your trailer 30A service and only wired for 1 AC unit? If so then it’s probably not the racetrack. I used foam pieces, cut them a little large and then wedged them in.

50a. Wired for 2nd a/c

[chuckster57]

Here is a link that shows it, Scroll down. I don't know if it is only in the Grand Designs trailers
https://www.granddesignrv.com/showro...e/construction

[Archergodwin]

I used a 1gallon freezer ziploc bag, and squirted some great stuff in it, then placed it in the duct.

[travelin texans]

I cut pieces of 1" foam pipe wrap insulation about an inch to inch & half longer than duct width & bowed it into the duct.