On Thursday, July 2, 2020 at 2:06:43 PM UTC-5, Sonny wrote:
On Thursday, July 2, 2020 at 11:59:55 AM UTC-5, pyotr filipivich wrote:

Which brings me back to "fitting the windows" because I'm going to
loose that wall space behind the bench..

Option, with some extra work maybe, if you only gonna use the 2 smaller 2'X5' sashes. Install the sashes sideways, make a double hung unit so that you can open the sashes from either top or bottom. The whole unit would be ~ 5' wide and above the bench.

Sonny

The 2 sashes wouldn't have to mate against one another, in the middle. Each would have its own separate track along the jams. Possibly easier to repair and/or replace if one sash gets broken.

Sonny