BACK DRAFT DAMPER 250MM


Price:
Sale price$69.99

Description

This 150mm 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 simple, practical addition for grow rooms, tents, and ventilation setups where maintaining one-way airflow matters.

Why you’ll like it

  • Helps prevent reverse airflow when fans are switched off (as stated)
  • Automatic close function supports more stable ventilation control
  • Useful for reducing drafts and unwanted air movement through ducting
  • Simple inline addition to standard duct runs

Best for

  • Grow tents/rooms with inline extraction systems
  • Ventilation lines where backflow causes odour leaks or climate drift (general guidance)
  • Systems that cycle fans on/off (timers or controllers)
  • HVAC-style ducting setups needing one-way airflow control

How to use

Install inline with 150mm ducting in the correct airflow direction, then secure with clamps or tape as needed. Ensure 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: Not applicable
  • Coco: Not applicable
  • Soil: Not applicable
  • Systems: 150mm ducting and inline fan ventilation systems

What’s included

  • 1 x Back Draft Damper 150mm

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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