This self adhesive door seal gasket is for Airstream main doors from 1974 through today.
Peel-and-stick adhesive is very strong so position carefully.
The base is 1/2" wide (adhesive is 3/8" wide) and height is approximately 5/8".
Sold by the foot. 20 feet is generally needed to seal one entrance door, but it is a good idea to measure rather than taking our word for it.