An opening without a door in a wall is called a

• A. Archway
• B. Pass-through
• C. Cased opening
• D. Doorway

Answer: (C)

This is about how interior openings between spaces are finished and defined. When an opening between rooms has trim or casing around it but no door, the term used is a cased opening. This label emphasizes that the space is clearly defined and framed, yet there is no door installed to close it.

Why this fits best: archways imply a curved top, which isn’t described here. A pass-through is typically a larger opening used to pass objects between spaces and often lacks doors as well, but it doesn’t specifically denote the presence of trim framing around the opening. A doorway suggests an opening that is designed to hold or accommodate a door, which isn’t the case when there’s no door. Therefore, the most precise term for a doorless wall opening is a cased opening.