Weather sealing on a storage door enables block drafts, rain, airborne dirt and dust, and pests from entering the space lower than.
https://coomera-qld4226-sj471.trexgame.net/just-how-to-fix-a-garage-door-springtime-securely-and-efficiently
Weather sealing on a storage door supports block drafts, rain, dust, and pests from coming into the gap below.