150mm Stainless Steel Ventilation Grille with Anti-Backflow, Movable Louvers, and Automatic Closing for Cooker Hood

General Description The 150 mm stainless steel ventilation grille is designed for outdoor use, covering ventilation ducts. It is equipped with a louvered non-return valve that closes automatically when the fan stops, preventing the entry of cold air and the penetration of dirt, insects, and other objects. Made of stainless steel, it is weather-resistant and corrosion-resistant, making it an ideal choice for various environments such as kitchens, workshops, cellars, and tumble dryers. Technical Specifications Overall dimensions: 19 x 19 x 8 cm Compatibility standard: DN150MM for standard round ventilation ducts and flexible hoses Installation Easy to install with standard tools Supplied with wall plugs and screws for installation Insert the ventilation cover into the duct and secure it to the wall with the screws provided Install the clamping eyelets on the ventilation hose for optimal retention Use Suitable for kitchen hoods, workshops, cellars, tumble dryers, etc. The slats open with very little pressure, allowing for efficient ventilation. A typical clicking noise should be heard when installing near living areas.