CABAX4 Inch 10 Feet Air Ducting, Flexible Black Aluminum Vent Hose for HVAC Ventilation with 2 Clamps

CABAX 4 Inch 10 Feet Air Ducting, Flexible Black Aluminum Vent Hose for HVAC Ventilation with 2 Clamps

Vent Systems 100 mm / 4" Inch Air Vent Duct Connector Flange - Plastic Ventilation Pipe - Ducting Connector for Round Flexible or Straight Pipes, Cooling Heating Ventilation System HVAC

Hon&Guan Aluminium PVC Ventilation Air Ducting 100mm Flexible Vent Hose Pipe for Extractor Fan, Hydroponics(ø100mm*5m,Gray)