We have a 2018 Windsport 29M. From what I understand it is for emergency exit only and designed to fall out for exit. A pretty stupid design. I don't understand why the didn't hinge it so you could get fresh air. I wonder how many people lost that window because of this. We opened ours once before we found out and we're lucky to still have it. Believe me if there was a fire a hinged window wouldn't prevent me from getting out.