What happened here?
Came home from a trip and found this.
It's a glass panel (not slider) in my enclosed lanai. That's not rain drops. It's a shattered pattern, but glass isn't broken. Any thoughts on the cause?
I couldn't find any evidence that something hit it. Could a close lightning struck have caused it? Manufacturing defect? This panel was replaced under warranty a year or so back due to a broken seal, so I wonder.
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