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2 Pcs 8 Inch Draft Backdraft Damper

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$35 USD
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2 Pcs 8 Inch Draft Blocker Backdraft Damper Duct Draft Stopper One-Way Airflow Ducting Insert Backflow Preventer Inline Fan Vent Deflector

Two 8 inch backdraft dampers for duct venting to regulate airflow and prevent re-circulation when fans are off. Customers note easy installation and good airflow control, with some concerns about spring strength

Highlights

  • two-pack for ducting
  • metal construction with aluminum flap leaves
  • prevents air re-circulation when off

Pros

  • easy installation
  • good airflow control
  • galvanized steel body
  • aluminum flap leaves
  • includes two dampers

Cons

  • spring strength may be too weak
  • not suitable for plastic ducts
  • size confirmation required before purchase

Best For

  • ventilation for grow tents
  • preventing drafts in drying appliances
  • airflow regulation in ducting systems
  • inline ducting for non-plastic ducts
  • retrofit into existing ventilation pipes
  • horizontal or vertical installation guidance

Features

  • Includes two 8 inch (200 mm) backdraft dampers; check size before purchase
  • Made of galvanized steel with aluminum flap leaves for durability
  • Installs by pushing into the duct; horizontal spring position ensures optimal operation
  • Blocks backflow to improve ventilation when fans are off; compatible with flexible or non-flexible ducts
  • Suitable for use in ACs, exhaust fans, extractors, and range hoods

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