Summary: I had the oven professionally installed. It was to replace the exact same model and size. But this new one doesn't really fit in the same space. There is about a two inch space on the bottom where the old over was located. Now I have to try to find some matching tile or ? to cover this space.
Summary: We bought this microwave, installed it, and it worked great. But then the door stopped opening. We installed it over a stove. It turns out the plastics on the front will melt and deform from normal amounts of heat. The previous microwave didn't have this problem.
Summary: Measured spot, questioned users to be sure there would be no problem (thank you to those that answered) and this fit in perfectly. It's a high wattage though. If you're accustomed to a counter top microwave with less watts - be very careful.