JohnG3 wrote:
Found out later that the duct to the bedroom did not have an end so that much of the cool air entered the "attic" then out the roof vents. Cut a pool noodle wide enough to fit snugly into the duct down stream from the bedroom AC vent. The result was much more air flow into the bedroom and a noticeable improvement on cooling throughout the trailer.
Yowza, now this is interesting. Who'd a thought something like this could occur? Not me. How did you check, mirror in the end ceiling register? Thanks for posting.