After a long research, my wife bought this hood despite my warning about the damper problem that I learned from my own research.

The hood is nice design, powerful fan, good lighting, simple to use ... poor quality vent damper.  Yes, the damper hinges are made from the same soft aluminum sheet that failed after a year or so of usage.  Luckily, it escaped the fan when falling down otherwise the motor and case would be further damaged.  It cost a lot to put it and now it would cost a lot more to repair due to the location.

I've had many GE Profile appliances before but I'm now thinking about something else.  For this hood, I'll probably yank it out and replace with a different brand because I will have to face the same problem maybe another year from now.