Broken Window help?

[Hardway]

2013 Keystone 381LEV Raptor Toy Hauler. Somewhere between home and 60 miles most of the Window blew out on the slide section housing couch and dining table. This was the fixed upper section(49 inches wide) with two moveable sections below it for ventilation. (The two moveable sections stayed in). Thought at first an explosion had occurred as the 15% of the window remaining was pushed outwards. Checked all vents were closed, propane refer running normally. Wife was behind but sometimes not very close and witnessed nothing until we pulled into a rest area.

Anyone with any ideas what may have caused this??? I spend two years working on this trailer to correct problems and thought I had it pretty well down. There is roughly 7000 miles on the trailer including transport to state.

Any comments you have would be appreciated....Thanx!!

[jram116]

Same thing happen to us on our way back from Texas this last spring. The rear large garage window static section just shattered. Discovered it when the wife saw the blinds hanging out of the window. (just didn't look right to her )
Took Keystone four months and three orders later before they finally gave us the right window, oh yeah and cost us $486. We never did figure out how it broke.