Rough opening dimensions

I am looking for the rough cabinet opening dimensions for a Frigidare Micro Wall oven, model # REM77BD.

It is a Frigidare product and that is the correct model number. I can download the user manual on the frigidare web site but they (Frigidare) no longer have installation guide avqilqble for download

I am assuming you bought this unit use and need to install it.

Since no info is available all I can suggest is that you look up a current similar product or two and use the clearances for those units.

Thanks, I appreciate your advice