ducts - How to access OTR microwave exhaust vent/ducting - Home Improvement Stack Exchange

I currently have an OTR microwave that is externally vented The exhaust vent for the microwave is concealed by cabinets above the microwave, and inside the cabinets the ducting itself is concealed

Master Flow 3-1/4 in. x 10 in. x 7 in. Hood Transition Fan Boot FB3.25X10X7 - The Home Depot

How to Install an Over-the-Range Microwave

How to Properly Use Ductwork to Vent a Microwave Exhaust Fan Outside

OTR Microwave Ductwork Advice (more in comments) : r/hvacadvice

Wall venting OTR Microwave? - RedFlagDeals.com Forums

Replacement For An Old Over the Range Microwave GE Spacemaker Model # JVM1341WW 002 - Home Improvement Stack Exchange

vent - What sort of contractor retrofits kitchen exhaust ducts in the US? - Home Improvement Stack Exchange

kitchens - Is it safe to use a portable microwave in a confined shelfspace? - Home Improvement Stack Exchange

When my over-the-range microwave's vent fan is on, it blows hot air from the vents above it into the kitchen. Is it supposed to do that rather than out of the house?

Microwave exhaust vent - Community Forums

Makeup Air for Kitchen Exhaust - GreenBuildingAdvisor

LG Extendavent 2.2-cu ft 1000-Watt Over-the-Range Microwave with Sensor Cooking (Black Stainless Steel) in the Over-the-Range Microwaves department at

hvac - How should I connect misaligned round ducts inside a cabinet? - Home Improvement Stack Exchange