I will look at them. When I installed mine I could not figure out how to mount them vertically and get them to work. It seems like they should mount vertically but the angle of the tee wouldn't allow it to insert into the door side bracket. There may be a way but I couldn't figure it out. Maybe I could have bent it to work if I could get the bend to stay. The door is as far as it will open. It has a bumper to keep it away from the furnace outlet. But you're correct as to why it wants to come out in the wind.
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