I’ve got a side sliding 40″ high window I’d like to vent through.
I am using 6″ diameter pipe. With this 23″x4″ vent, I just need a 17×4″ filler above it to close the window on the vent.
How narrow can this be? I drew it as 4″ here. I suppose if the 6″ pipe attachment overlapped enough it could be as small as 2″? What do you think?