Protocol 3

4 Inch Hydroponic Ducting

  • Sale
  • Regular price $19.99

  • This lightweight insulating air duct is manufactured with a helically shaped internal crimped galvanized steel strip. The strip locks together with the aluminum foil in order to form an air tight and leak proof lock system. It ensures excellent strength, making it perfect as a flexible solution for a broad range of venting requirements from low or high pressure heating, as well as for ventilation to air conditioning application.


    • 4 Inch
    • Standard Length: 25 feet
    • Minimum echoes possible
    • Self-supporting & corrosion resistant
    • Sliver outer shell for leaking proof
    • Completely flexible ducting for routine exhausting
    • Reinforced double-layer aluminum foil construction
    • Ideal for HVAC, bath and general ventilating applications