I had assumed that the rear window from the factory was tempered. I went and looked at my coach and looked for a label that showed if it was either tempered or laminated like the windshield. Nothing was there. So I am assuming it is laminated and can't be broken to be used as an emergency exit. Except you could exit the rear if the "pull ring" is still present.Some owners have easy time. Others struggle…
My local glass company came over. Taped up the broke glass to remain as one piece. Then Removed the glass and plastic up the hole. They used that glass as template, had a new one made and a week later installed the new glass. It was a little clear, so brought it in and had window film installed for tint. A year later found a crack and they did it a second time. No issues.
Some say window should be tempered. Mine was not, and was not an option for a replacement. (Cost). I know some have gotten used glass.
Some have has to make a template.
They reused the gasket on mine. No big deal.

There is a possibility that rear is tempered from factory, but I cant guarantee it. I think over 50 years now there maybe have been lots if replaced glass so who knows.I had assumed that the rear window from the factory was tempered. I went and looked at my coach and looked for a label that showed if it was either tempered or laminated like the windshield. Nothing was there. So I am assuming it is laminated and can't be broken to be used as an emergency exit. Except you could exit the rear if the "pull ring" is still present.
Reason for my concern was using it as an emergency exit in the event of fire or accident rendering escape by the entrance door impossible. I still have the pull ring that allows the window to fall out. In addition I could escape through the newer windows as they are tempered and I have 3 of those tempered glass hammers hanging on hooks in the coach.
I think it makes sense to have plans in place on how to get out of the coach in case of emergency and do practice (without breaking glass of course) fire/accident escape drills.
View attachment 11727
Interesting. The maintenance manual mentions cracks and cracks continuing to grow, that doesn't happen with tempered glass it just shatters.View attachment 11949
Well the parts book shows the "Bedroom Rear Window" as being tempered. I can see where it might not make sense to have that large window be tempered.

Plastic will scratch and cloud up over the years. Certain dusts are very abrasive, so even cleaning it will degrade it over time. It's cheaper for the short term, if that's what is most important.It has been suggested that I take out the rear window I cracked by backing into an oak tree branch. Then place it on a sheet of paper & daw a template. Tempered glass is about $400.00’s. Another option is a Polycarb plastic. It also can be tinted & costs $134.00 to $150.00. Sounds better to me.
Has anyone tried it?