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The latch should not vibrate loose if adjusted properly. Since our initial window loss, no latches have self-opened. The self-opened one was very loose and easily rotated open.
It was the front latch, therefore wind was blowing toward it as we traveled and probably the window was being forced open slightly until either another factor, like the vacuum from a passing truck, or the window reached the point when it would shatter. If it were the rear latch, the wind may have pressed it to the body and maybe nothing would have happened. I am not going to experiment with that to find out. So, the glass can shatter with one latch down and one locked. A latch designed to open when it falls down does not take gravity into consideration and is not well thought out.
If the glass had a frame, maybe it would not break as easily. Whether the decision was made not to include a frame because of design considerations or cost cutting I don't know.
The chance of getting a new trailer with a poorly adjusted latch is hopefully small. The chance of leaving the latches open yourself is probably pretty small too, but maybe not as small.
The post by AZ-JH says they lost a window too, but we don't know why that one broke. It appears they don't either.
These large frameless windows are attractive, but besides sometimes breaking, are not very practical either. The opening and closing system is awkward and we don't often open them. Open means it's easy to get in the trailer for bears and people with foul intent. We never leave them open when we go to bed and use the roof fans to ventilate the trailer. Earlier windows (I've seen them on a 2005) had a fixed and larger open section on top and a smaller section at the bottom to open. It's too small to act as an entry point and is framed to strengthen the glass. But it's not as pretty.
Gene
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