RT29. Midberth AC

[Jfrano]

How do you install the HCAC ductwork to the blower on the Webasto Classic 16K AC on a 2017 RT29?
With the unit in its bolted down final position, it’s impossible to reach around or over the unit to secure the 5” ductwork to the units blower.

Am looking to remove broken unit and replace with a CTM 16

Thanks