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4. Which type of duct undergoes more rigorous testing before it's labeled?

4. Which type of duct undergoes more rigorous testing before it's labeled?
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4. Which type of duct undergoes more rigorous testing before it's labeled?

User Dundar
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1 Answer

12 votes

Answer:

Flexible duct

Step-by-step explanation:

it is flexible duct due to current flow

User Danialk
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