Which type of window consists of two sashes sliding vertically?
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A.
Casement window
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B.
Sliding window
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C.
Double-hung window
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D.
Fixed window
Correct Answer:
C. Double-hung window
Explanation:
The correct answer is Double-hung window.
A double-hung window features two movable sashes that slide up and down within the frame. This design allows for flexible ventilation, as both the top and bottom sections can be opened independently. In contrast, a single-hung window only allows the bottom sash to move, while a sliding window moves horizontally. The vertical operation of the double-hung window makes it a classic and practical choice for many residential buildings, providing efficient airflow and ease of maintenance.
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