Vent a microwave vent / range hood through wall

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I've got a Whirlpool over-the-range microwave that is currently venting back into the kitchen. I'd like to poke a hole through the wall and vent it directly outside. I've read the instructions and it seems pretty straight forward.

I don't know much about this, so my question(s) is: am I going to be "locked in" to this microwave? What happens in three years when I want to replace it with another brand? Is it likely that the exhaust duct will still line up? What if I replace it with a hood?

Best Answer

There is no standard mounting or vent hole dimensions for these type of microwaves. Although most of them adapt to 4inch vent hose, there is no standard to where on the back of the microwave the vent is attached, and this can effect where you need to cut your hole in the wall, especially in 2X4 walls where you won't have a lot of room to offset the vent.