Door Sweep

Seals the bottom of an exterior door, preventing drafts, water, noise, light and insects.
Usually made of aluminum extrusions with vinyl flaps.
Screws into the lower part of the door.
Some types lift automatically when the door is raised.
Another type is an aluminum extrusion with a rain-drip flange to prevent the flow of water off a door from collecting on a threshold and flowing under a door.
Another type is an adhesive-backed plastic door sweep.

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