Jayco A/C ducting

[DonC757]

Checked both units on my 2019 34G and they were pretty tight from the factory. No big gaps or leaks.

 

[Kehl Higgins]

All the vents on one side of my 29MV didn't work. Because of a video like this I checked and found they did not even cut out the foam to the ducting. Did the same as others here and fixed all leaks with foil tape. Much better flow but also much quieter!

I got a 2021 29 mv same issue, quality control isn’t something that is done there