has a round, louvered, approx. 4 1/2" vent on each side of the cabinet. They are located toward the rear top of the cabinet sides.. A strip of wood moulding is screwed to the cabinet bottom. The moulding is not quite as thick as the height of the microwave's feet. It is located in front of the feet and the 'wave is pulled forward so the cabinet door just closes. I believe the cabinet door is eliminated on Casita
factory installations. Of course, it is only used
with the cabinet door open. This allows the maximum amount of room for ventilation in the back. The electrical
outlet is located towards the rear on the right inside cabinet wall.
In 7,000+ miles of travel the microwave has not budged.
We hope this gives you a little more insight.
& Ann K.