My GE SpaceMaker over-the-range microwave requires 6 inch duct pipes.

If you use 6 inch ducts for all 10 feet to the wall of the house but use
a 4 inch opening to the outside - is it as bad as having 4 inch ducts
all the way?

"BN" wrote in message
...
My GE SpaceMaker over-the-range microwave requires 6 inch duct pipes.

If you use 6 inch ducts for all 10 feet to the wall of the house but use
a 4 inch opening to the outside - is it as bad as having 4 inch ducts
all the way?

Do you want it to work properly? If you do, use 6 inch all the way. I see
it kinda like wanting to water a large area of your yard with an 85PSI water
supply and choking the flow down at the sprinkler.

BN wrote:
My GE SpaceMaker over-the-range microwave requires 6 inch duct pipes.

If you use 6 inch ducts for all 10 feet to the wall of the house but
use a 4 inch opening to the outside - is it as bad as having 4 inch
ducts all the way?

If it requires 6 inch duct, it also requires 6 inch opening through the
wall. Just put the right size hole in the wall. If you don't know how,
have it done. You are spending money and effort for a good vent, why cheap
out at the end and screw up the job?

--
Joseph Meehan

Dia duit