General description The Round Ventilation Grille is an adjustable air vent designed for both air inlet and exhaust applications. Made from durable 316 stainless steel with a polished surface, it offers excellent corrosion resistance and sturdiness. This versatile grille is suitable for various environments, including indoor and outdoor use, making it ideal for heating or ventilating spaces such as boats, mobile homes, caravans, and garages. Technical specifications Diameter: 125mm (5 inches) Drill holes: 4 holes (3.5mm) Usage Adjustable air volume to meet specific ventilation needs Can be used for indoor exhaust and to change fresh air according to requirements Suitable for garages and other spaces requiring optimal ventilation