Ø 100mm / 4'' Cowled Duct Cover with Gravity Flap Ventilation Grille Rain and Wind Protection External Air Vent Covers ABS Plastic White

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., Weight: 0.3086471668 pounds, Manufacturer: Europlast