"Buerste" wrote in message
...
Can I get away with running 4" flexible dryer vent in my attic from the
microwave to the vent at the peak about 40' away? I don't want to go
through the roof and it's on an inside wall and the eves are very hard to
get to and very narrow.


No
First of all, it is flammable. A vent over a stove should be metal. If you
have a grease fire on the stove you may end up with a fire in the attic.
Next, it is too small. The vent of the microwave is probably 4 x 8 or so.
Next, it is much to small for the distance