A door frame is the structure that surrounds and supports a door, providing stability and a secure fit. It consists of vertical parts called doorjambs on each side, a horizontal part at the top known as the door head, and sometimes a bottom piece called a threshold. The door frame helps keep the door in place, allowing it to swing open and closed smoothly. It is typically made from materials like wood, metal, or composite materials and can be designed in various styles to match the overall appearance of a building. A well-constructed door frame contributes to the durability and functionality of the door.

英語での「door frame」の定義と意味

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