While working on other things this was one of the side jobs. I had to make little mouse holes for running the hot air forward.

Pic 1 shows some side ducts and pic 2 after installing a duct using some angle I’d made earlier. Pic 3 shows just a mouse hole but it took a while. The forward one is where I’m ducting air to my feet and it had to be positioned very carefully.

Mouse holes

Center joining duct

A forward to feet mouse hole