Duct Cowl 150mm x 150mm with 100mm Flange and Gravity Flap Ventilation Cover

  • Ø 100mm / 4'' Round Spigot Ensures a Secure and Efficient Connection to your Ventilation System
  • Durable ABS Plastic Construction for Long-lasting Performance in Outdoor Environments
  • Cowled Design Prevents Rainwater and Wind from Entering the Ventilation System
  • Integrated Backdraught Shutter / Damper Flap Prevents Reverse Airflow and Minimizes Unpleasant Odors or Draughts
  • Ideal for Garden Sheds, Greenhouses, and other Outdoor Structures | Perfectly Suited for Use with Bathroom Extractor Fan, Tumble dryer, Cooker hood, Hydroponics, etc.