[villagetinker]

This looks like the type Lowe's and Home depot sell. If it is this is a vinyl strip with the flexible gasket attached. The strip gets nailed into the framework around the garage door. Many of the local handymen can do this, I did my own. Note if you want the same look, you will need to get matching paint, and be sure who ever does the work uses rust resistant or similar nails and the molding needs to be sealed with a high quality paintable silicon sealer to the side of the garage opening.