Door sweep
The flexible seal along the bottom edge of a door that presses against the threshold to block drafts, water, and bugs.
What it means for you
The cheapest, most replaceable weatherseal on the whole house — and often all that's wrong when you feel a draft or see daylight under a door. Worth trying before assuming the door itself is the problem.
Where you'll see it
The bottom of the door; a quick, low-cost fix for under-door drafts.
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