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I can’t answer your question, but I did post a couple of weeks ago, that my interior pane of dual pane window shattered while at the RV dealer. Now it wasn’t hit from the outside, because the outside glass is unmarked and in place. And it wasn’t hit from the inside because the screen is fully intact with glass particles against it on the inside. So it broke on its own. Someone posted that some glass has impurity’s in it and those particles , not visible to the naked eye, can start to rust, cause an expansion and break the tempered glass.
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