We had this installed as part of remodel a year ago and almost to the day both the handle and knob failed. The distributor ADU went to bar for us and we got a new model because apparently there were no more knobs! This is obviously an issue. And the installers flubbed up the install the exhaust doesn’t seem to work any longer

The actual microwave is awesome, works 
great.just buy it from someone you develop a relationship with, not online or a big box store