I love the concept of a double wall oven that fits in the same space a standard wall oven; however, the upper oven is VERY shallow in depth.  I should have paid closer attention to the dimensions online since the stores we visited all had to special order the product and I was unable to see it in person.  It is a bit slower to preheat than I expected and I've learned I have to adjust my cooking times from 5 to 10 additional minutes to ensure doneness.  I love the touch screen and ease of cleaning the ovens.  I was excited for the air fryer option, but the option wasn't available when the unit was initially installed.  I downloaded the app and connected the oven to my WIFI and after running an update a couple of weeks post install the air fry option appeared.  I'm used to having two full sized ovens so this will take me a while to get used to.  It is a beautiful oven though.