OTR Microwave CFM Limits
Can an OTR microwave handle a professional range?
Airflow Capacity
No. Over-the-range (OTR) microwaves typically max out at 300 CFM. High-BTU ranges require 600–1200 CFM. OTRs should only be paired with standard electric or low-output gas ranges.
Max 300 CFM capacity; typically unsuitable for high-BTU professional gas ranges.