If the felt is rubbed off your Felt Channel then it is time to replace it. This is a great update for your Air Cooled VW, and a great way to stop rattles and drafts in the windows!
This fits Sedans only.
1965-1977 Beetle Sedans
1971-1975 Super Beetle Sedans
1962-1973 Type 3
1968-1979 Bay Window Bus