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Question

A door designed with inclined slats to permit ventilation while restricting direct visibility is classified as which type?

This question was previously asked in
RRB JE 2025 CBT 2 Mechanical and Allied Engg Question Paper English (2-Jul-2026) (Shift-1)
The correct answer is

Louvered door

The problem involves identifying a particular type of door based on its design characteristics. Let's analyze the given options:

  1. Panel Door: Panel doors are made of solid wood panels framed into stiles and rails. These doors are not characterized by ventilation features.
  2. Flush Door: Flush doors have a smooth finish and are plain on both sides. They are typically solid and do not permit ventilation.
  3. Louvered Door: This type of door is constructed with a series of inclined slats or louvers. The design allows for ventilation (airflow) while restricting direct visibility, which matches the description provided in the question.
  4. Collapsible Door: Collapsible doors are sliding door types that can fold back and are generally used for gates or large openings. They are not designed for ventilation or privacy concerns like the other options.

Therefore, the correct answer is the Louvered Door because it is designed with inclined slats to permit ventilation while restricting direct visibility.

Conclusion: The Louvered Door matches the description perfectly, allowing airflow and maintaining privacy, distinguishing it from the other options provided.

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