It has strong ventilation with a fully enclosed pure copper motor that provides fast fume suction and efficient airflow, helping to keep indoor air clean and comfortable. Seven thickened blades deliver powerful and uniform air volume, are resistant to deformation, and ensure stable, vibration-free operation with reduced noise. Constructed from iron material. Available in multiple sizes and colors: - 4Inch Black: Diameter: 10cm/3.94" (Approx.), Length: 7.3cm/2.87" (Approx.) - 6Inch Black: Diameter: 15cm/5.91" (Approx.), Length: 15cm/5.91" (Approx.) - 7Inch Black: Diameter: 17cm/6.69" (Approx.), Length: 14cm/5.51" (Approx.) - 4Inch White: Diameter: 10cm/3.94" (Approx.), Length: 7.3cm/2.87" (Approx.) - 6Inch White: Diameter: 15cm/5.91" (Approx.), Length: 15cm/5.91" (Approx.) - 7Inch White: Diameter: 17cm/6.69" (Approx.), Length: 14cm/5.51" (Approx.) Easy to install, suitable for kitchen, toilet, office, meeting room, restaurant, supermarket, cinema, internet cafe, workshop, waiting hall, and other spaces. Item Name: Exhaust Fan Material: Iron Features: Strong Wind, Super Suction Voltage: 220V Frequency: 50 Hz Notes: Due to differences in lighting and screen settings, the item's color may vary slightly from the images. Please allow slight variations in dimensions due to manual measurement. Package Includes: 1 x Exhaust Fan