| 摘要 |
A portable door covering device for placement inside or outside a door leading to the outside of a building, said device being so placed as a permanent or temporary structure during colder months in order to minimize the escape of the heat contained indoors to the outside areas. The device is comprised basically of a semicylindrical member of hollow disposition, said member being open on the one side thereof for placement against the walls near the door area, and the other side being enclosed and equipped with a conventional door to allow access to areas inside the door covering device.
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