During my kitchen remodel I had roughed in 3 1/4X10" duct in the wall
that the range hood will exhaust out through the back, go 90 deg up
between the wall studs and out through the roof.
Now I notice a problem that I overlooked. The damper on the range
hood needs at least 3" clearance to open. I do not have 3" clearance
because I have a short 90 elbow in the wall.. But my roof vent, made
by Broan, has a damper in it already. In fact it looks like a better
damper than the one on the range hood. It has a weather strip seal and
So my question is can I remove the range hood damper if the roof vent
has one already?