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Does range hood need damper if roof vent already has one?

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Does range hood need damper if roof vent already has one? Mike rock 10-06-2007
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Posted by Mike rock on October 6, 2007, 4:57 am
I posted this in the home repair forum, but I figured maybe this
should be the place to seek an answer.
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 ( model 634), has a damper in it already. In fact it looks
like a better
damper than the one on the range hood. It has a weatherstrip seal.
So my question is can I remove the range hood damper if the roof vent
has one already?


Posted by on October 6, 2007, 5:18 am
wrote:

>I posted this in the home repair forum, but I figured maybe this
>should be the place to seek an answer.

        Wrong.

>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 ( model 634), has a damper in it already. In fact it looks
>like a better
>damper than the one on the range hood. It has a weatherstrip seal.
>So my question is can I remove the range hood damper if the roof vent
>has one already?

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