2013 17b rear window upgrade?

[mt caleb]

Hello, I have a 2013 17b and am wanting to replace the non-opening rear window with one from the newer models that is a split opener. I'd like to get more airflow.
I talked with the folks at Escape and since the fire destroyed the records they don't know the dimensions of the opening on my trailer and have asked me to pull the window and measure it. Before I do that, has anyone made this modification?
Or, does anyone know the opening dimensions of the older windows?
Thanks for any help. Caleb in Montana

[sleepy]

Great idea.

I have a 2014 5.0 TA, and when I bought it (new), the factory wouldn't install an opening window at the rear. They claimed that it would leak while I was driving. Caused by water getting pulled into the trailer. I don't know if that's true but many trailers have opening rear windows

I look forward to reading how your project might go.

Thanks