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6" Adjustable Duct Elbow 90 Degree HVAC - 26 Gauge Galvanized Sheet Metal Duct Connector, for Flexible Round Tube air Ventilation & Vent Pipe ductwork Collar Piping ducting Fitting - Ducting Components - Amazon.com
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Amazon.com: 90 Degree Dryer Close Elbow Vent Tube Connector,Metal Elbow Connector for HVAC Duct Ducting Pipe or Hose Ductwork, 4", Silver, Adjustable Using Duct Crimper : Appliances
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