Product review (5 stars): Fits exactly as the other reviewers measured
It fits perfectly under my cabinets - the measurements given by everyone are accurate! I was terrified this would blow the ancient fuses on my already electrically overtaxed retro apartment, but it runs with just a small dimming of lights. WHEW. It heats nicely and is quite spacious. The only annoying thing is that start/stop are the same button, but "cancel" is a tiny button near the top of the panel. So often I go to clear the screen from leftover time and end up starting the darn thing again. I am used to cancel/stop being the same button! I'll reprogram myself. In the meantime, I love it.
Side note: There is a cardboard-y thing stuck to the side of the microwave which is not mentioned in the other reviews or in the manual - LEAVE IT THERE. If you go to the manufacturer's website, you can find out it's a mica panel to protect a vent. It's tempting to toss it because it looks out of place with the rest of the shiny chrome, but just leave it.