This white ventilation grille from Awenta is designed for round ventilation ducts, ensuring proper air circulation for both people and animals. It is particularly important in buildings where chemicals or cigarette smoke may be present. The grille features an adjustable diameter from 100-150mm and includes a protective anti-insect mesh. The flange diameter is limited to a maximum of 4" to 6" (4"-5"-6"), with an outside diameter of 7". This grille is suitable for ventilation systems both inside and outside buildings, for residential and commercial premises, kitchens, bathrooms, toilets, and garages. It has inclined louvers that direct airflow and can be installed in multiple directions by simply rotating it. Made from high-quality, durable, UV-resistant, environmentally friendly, and non-toxic ABS plastic with a built-in fiberglass net. Perfect for use with other Awenta ventilation products to improve air quality.