06-21-201501:14 AM
I live in a cold-winter area, and can see and feel exactly where cold air is coming in under my front door. Along the bottom of the door, I see that there's a sealant-type material (rubber?) that goes along the width of the bottom. In about a 2" span, the material is torn and partially missing.
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Rubber U Channel Seal
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Rubber U Channel Seal