Over-the-Range Microwave - Installation on Counter or Shelf
Over-the-Range Microwave ovens and Advantium/Five in One ovens cannot be used on a counter or shelf and are not UL (Underwriters Laboratory) approved for this purpose.
Keep in mind the underside is not flat on an Over-the-Range Microwave or Advantium/Five in One oven. This would not provide a stable surface. Additionally, there can be a heat issue, especially if the vent fan or surface lights were accidentally turned on.
Other Installation/Use Considerations:
Do not install within a closed cabinet or a cut-out space where the bottom is covered.
These can be installed under a cabinet, even if there is not a cooking surface underneath the appliance. However, the height clearances outlined in the Installation Instructions must still be met.
You can consult the Installation Instructions for your specific model to see all clearance requirements.