exhaust fan roof vent

1187 Views 3 Replies 4 Participants Last post by ryansdiydad, Dec 15, 2015

detroittigerfan

Discussion Starter · Dec 15, 2015

I have a square top roof vent that I want to remove and replace with a bathroom exhaust fan roof vent. The hole that is currently their is about 6" and the exhaust fan vent is for a 4" round duct. The hole will obviously be large enough for the pipe to fit through but is it too large of a hole?

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craig11152

· #2 · Dec 15, 2015

detroittigerfan said:
I have a square top roof vent that I want to remove and replace with a bathroom exhaust fan roof vent. The hole that is currently their is about 6" and the exhaust fan vent is for a 4" round duct. The hole will obviously be large enough for the pipe to fit through but is it too large of a hole?

How big is the replacement vent? I assume the 4 inch duct is going to fit in a fashion as to be sealed and force open a damper.

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