ducting

/ˈdʌktɪŋ/
noun
  1. A system of ducts or tubes used for carrying air, cables, or other materials.
    • The electrician ran the cables through plastic ducting under the floor.
    • We need to replace the old ducting in the attic before winter.
    • The HVAC technician installed new ducting to improve airflow throughout the building.
  2. The material (such as metal or plastic) used to make ducts.
    • The hardware store sells flexible aluminum ducting for dryer vents.
    • The contractor chose galvanized steel ducting for its durability.
    • They ordered a large roll of insulated ducting for the ventilation project.
Synonyms
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