Black Gravity Flap for Ø 100 mm / 4" Round Wall Outlet - Ventilation Duct Cover with Non-Return Shutters and Rear Spigot - Cowled Ducting Air Vent Grille

Ventilation Duct Cover - The perfect solution for airflow control in your home or office. Featuring non-return shutters and a rear spigot, this flap for round outlets ensures efficient ventilation and keeps out unwanted drafts. Experience better indoor air quality with this durable and functional product. Gravity Flap Technology - Innovative shutters for wall outlets that automatically open and close based on airflow, preventing drafts and improving ventilation. Non-Return Shutters - Ensures efficient airflow and prevents backdraft, making it a must-have feature for any grille for a ventilation duct. Rear Spigot - The wall outlet cover features a rear spigot for easy installation and secure connection to ducting, ensuring efficient ventilation and preventing drafts. Round Wall Outlet Design - The gravity flap with non-return shutters and rear spigot allows for efficient ventilation and airflow, with a sleek and modern round duct cover design., Manufacturer: SolaDirect