Which Type of Duct Material Is Used in Low-Traffic Areas

question 23

Multiple Choice

Which type of duct material is used in low-traffic areas and provides insulation to the duct system?

• A) galvanized metal
• B) fiberglass-wrapped, spiral duct (flexible duct)
• C) fiberglass, fiberboard sheeting
• D) round sheet metal

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Definitions:

Spiracles

Small openings on the surface of some animals, like insects, that lead to the respiratory system, allowing gas exchange.

Ventilate

To provide with a supply of fresh air by allowing air to flow through a space, often through natural or mechanical means.

Respire

The process by which living organisms take in oxygen and release carbon dioxide, involved in energy production.

Gas Exchange

The biological process through which organisms, such as plants and animals, exchange gases with their environment, involving oxygen and carbon dioxide.