BACK DRAFT DAMPER 300MM


Price:
Sale price$89.99

Description

This 300mm Back Draft Damper is designed to automatically close off ducting when your extraction fan stops, helping reduce unwanted backflow through your ventilation line. It’s a straightforward add-on for larger ventilation runs where keeping airflow moving one way improves control.

Why you’ll like it

  • Helps prevent reverse airflow when fans are switched off (as stated)
  • Automatically shuts to reduce drafts and backflow through ducting
  • Supports more stable ventilation performance in larger duct runs
  • Simple inline fitment with standard ducting

Best for

  • Large grow rooms and spaces using 300mm ducting
  • Ventilation systems that cycle fans on/off (timers or controllers)
  • Reducing backflow that can affect temperature/humidity stability (general guidance)
  • HVAC-style ducting where one-way airflow control is useful

How to use

Install inline with 300mm ducting in the correct airflow direction, then secure with clamps or tape as needed. Make sure the damper can open and close freely without obstruction.

  • Install in the correct direction of airflow (general guidance)
  • Support ducting so the damper isn’t under strain
  • Check operation after install (opens with fan on, closes when off)
  • Inspect periodically and clean dust build-up if needed

Compatibility

  • Hydro / Coco / Soil: Not applicable
  • Systems: 300mm ducting and inline fan ventilation systems

What’s included

  • 1 x Back Draft Damper 300mm

Notes

  • Available in multiple sizes (100mm, 125mm, 150mm, 200mm, 250mm, 300mm as listed)
  • Please note: backdraft dampers are non-returnable (as stated)
  • Ensure diameter matches your ducting for best seal and airflow
  • Keep away from sharp bends immediately before/after the damper where possible (general guidance)

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