What kind of roof vent

Old 09-10-17, 11:58 AM
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What kind of roof vent

I have to hook up 6 in vent to roof from hood above range top. I have roof vents being I think about 6 in already on the peak of the roof. There are about 6 or 7 of them around the two peaks of my roof. The vent comes up about 3-4 inch and is open on three side with a screen around the opening. Could I just put the exhaust from the range hood right into the 6 in roof vent.
Old 09-10-17, 12:07 PM
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You want a 6" roof cap vent with a damper. (Example)

They also make powered in line dampers if you would like to limit cold air that gets past the damper travelling back down the vent.
Old 09-11-17, 09:52 AM
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A 6" duct sounds like a fairly large exhaust fan. If capable of more than 400 cfm it may need a replacement air system and should spell that out in the instructions. More details on why/when that is needed if you would like.


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