7 Inch to 4 Inch Duct Reducer Increaser Galvanized Steel Air Duct Adapter Round Crimped Pipe for HVAC Ventilation System front-facing centered view of a tapered galvanized steel duct reducer, 7-inch to 4-inch round connector with crimped small end and raised edges, silver metal finish, about 150 mm length, designed for smooth airflow transition in ductwork and often used to adapt ventilation runs or connect portable ventilation equipment during maintenance.
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7 Inch to 4 Inch Duct Reducer Increaser Galvanized Steel Air Duct Adapter Round Crimped Pipe for HVAC Ventilation System

Key item features

  • Duct System Connection: Connects 7-inch and 4-inch duct systems for a smooth transition.
  • Airflow Optimization: Tapered design reduces air turbulence and pressure loss.
  • Secure Connection: Raised edges provide a better grip, and a crimped design on the small end allows for firm connection.
  • Galvanized Steel Construction: Made of galvanized steel, measuring 5.9 inches in length and 0.02 inches in thickness.
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