If they say no, do you think Sigma1009's idea of using cardboard of hard plastic to cover the inner opening would be good? Take a Detour SPACE CHANGES. Most vent grille covers have a lever on the side which adjusts the angle of an array of metal fins. Required fields are marked *. So next time you're tempted to close the vents in an unused room, remember that it's not doing . Ensure that ventilation air comes directly from outdoors and not from adjacent dwelling units, garages, crawlspaces, or attics. If youre more of a visual learner, you can see how this is done in this video. {"smallUrl":"https:\/\/www.wikihow.com\/images\/thumb\/a\/a1\/Block-off-a-Heating-Vent-Step-1.jpg\/v4-460px-Block-off-a-Heating-Vent-Step-1.jpg","bigUrl":"\/images\/thumb\/a\/a1\/Block-off-a-Heating-Vent-Step-1.jpg\/aid9833388-v4-728px-Block-off-a-Heating-Vent-Step-1.jpg","smallWidth":460,"smallHeight":345,"bigWidth":728,"bigHeight":546,"licensing":"
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