Yes, and it's not too dissimilar from the weather stripping. At the bottom of most garage doors is a rubber door seal to cushion the door as it closes, keep out pests, and defend against the elements.
You'll need those measurements to buy a garage door stop with a built-in sealing lip and a new bottom seal. While you’re at the home center, buy V-strip weather stripping, a tube of exterior caulk and ...