My Alaskan came with high density adhesive foam tape on that door....it will eventually rub off with the top going up and down. Amazon has it in a variety of widths and lengths. There might be a better product but I've not found it.
The foam tape worked well.
Now looking for some bulb seal that goes in the T channel that seals the perimeter of the door. Brian at Alaskan Campers didn't have any.
Any leads on this would be great