This screen door seal is made of foam and has a self adhesive backing. It works on Airstreams starting in 1965 and on most units right up to today.

This is an extra long 50-foot roll so you can use it on your screen door, around your refrigerator cabinet opening for a gap filler, and many other areas on your trailer where vibration can be dampened.

5/8" wide x 3/8" thick.