Remember that you need to have a vent in a room if it has a gas appliance, stove, etc.
Dont you get the loud whistling when there is high winds?
Thats also a concern.
The vents are too big now, but quiet enough.. but the whistling vents cause sleepless nights.
I would like to block them up completely and leave the window vents to essentially do the same job.. but not so sure.
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