A strip fastened to the floor beneath a door.- It usually covers the joint where two types of floor material meet.
- Can be made of metal, aluminum or wood.
- It may have a rubber strip in the center to aid in weatherproofing.
- An astragal is a molding or strip that covers or closes the gap between the edges of a pair of doors. Some types overlap while others meet at the centerline of the gap.
Threshold
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