A:Answer Depth is not a problem, the width is. There is no standard cab. for microwave drawer. But IMO, it's easier to install in 27" cab. Because fill is easier than cut. In fact the manual shows you can mount flush face with 27" cabinet. That's what I'm planning to do with mine. I'm remodeling my kitchen but have not yet ordered cabs. My Bosch is still in the box in the garage...hope this helps.