Michael, I feel the same way as you. I couldn't understand why the toll window was a double pane in the first place. After a few years, look around, everyone looses the seal. I think the problem is that movement (sliding back and forth causes the lost of a seal). Hey, the widows that were placed in my coach are a laminate,, simular to the windshield.

I went to a smaller local glass company. I mentioned to them that I understood that the glass didn't meet DOT.....and If they didn't mind, I didn't.... you know "Top secret stuff" ..... cash deal