Frame less windows

to get the model # you will need to remove entire window assembly. Model # is stamped on the frame. At least that is how mine are. Easy to change out entire window unit but very pricey

Try RV Glass Solutions . I had a similar experience a few years ago . They had a new glass made and then installed it. The first one they made was about 1/4 inch to small, they didn't like it, so they had a new one made, then came to where I was parked and installed it.This was in Oregon, but they have place in several states. Do a google on them.

Check a glass shop. Buddy shattered a mirrored closet door about 1/2 what the manufacture wanted, also temped glass for vehicle use.

Ive had 2 frameless winwows shatter. These Windows are tempered glass which can take serious impact to face, not to edge, If a rock hits the edge of exposed tempered glass it will shatter.
The model # is somewhere on the frame of the window . You can order a new unit from the mfgr, ( Hehr? ) in our case it was much cheaper easier to have a local glass shop repair the broken unit..
We did the R& R, very easy, they only made the glass