Copper roof vent perfect for that otherwise attractive roof. Copper will weather to a pleasing patina.
Provided with a damper to keep the weather out. Provided with a screen to keep critters out.
Flange measures 20" x 20" with a border of over 4".
Height of unit from flange is 6".
10 inch pipe extends 2" below flange.
(Photo above is actually of the 8" version, which is very similar.)