lintel

In architecture, a lintel refers to the horizontal stone slab or wooden beam that is placed on top of the two vertical supports of a door, an entryway, or a gate. A lintel can be a structural feature or a decorative one, and often functions as both.

In the traditional hogan, a common dwelling structure for Navajo peoples in the U.S. Southwest, a heavy blanket is often hung from the wood lintel log to form a door that can keep the inside warm in cold weather, but can also be easily removed as necessary.