9 Grammatical Pitfalls

air duct

an enclosure, usually of sheet metal, that conducts heated or conditioned air.
Origin of air duct
1865-70 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for air duct
  • Provide insulated acoustical air duct connectors in supply air duct systems and elsewhere as shown.
  • Flexible air duct trunk lines should not be limited in length.
  • air duct systems in buildings can also become contaminated with mold.
  • The fact is, many forced air duct systems are clunkers.
  • For sensors mounted in return air duct, adequate access for sensor calibration and field test must be provided.

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Difficulty index for air duct

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