LIRAST 500x100mm Adjustable Air Vent Cover White - 20x4 inch Wall Air Vent Cover Open Close - Hit and Miss Vent Cover - Air Brick Covers for Outside Walls - Metal Ventilation Grille

500x100mm / 20x4 inch metal air vent designed to fit securely into standard vent openings, ensuring a snug and stable installation. Open and close air vent covers ensure excellent airflow and ventilation, promoting a fresh and comfortable atmosphere. Adjustable vent cover is equipped with a sliding Hit and Miss mechanism, enabling users to adjust ventilation as needed. Air brick vent cover can be set to open, close or middle position. Vents for walls are made of high-quality, robust and durable steel, which is perfectly suitable for rooms with high humidity level, such as bathrooms, kitchens, garages, sheds, etc. Ventilation cover can be mounted as a wall vent grille or ceiling vent grille, providing versatile and efficient air distribution in any space Suitable for indoor and outdoor use, the wall vent cover features a sleek, unobtrusive design that enhances the aesthetics of any interior or exterior and includes pre-drilled mounting holes for easy installation Air vent covers for walls improve indoor air quality by allowing controlled ventilation, reducing moisture build-up. External vent cover is suitable for use in various settings, including residential, commercial, and industrial applications