It has strong ventilation with a fully enclosed pure copper motor that provides fast fume suction and air circulation, helping maintain clean and comfortable indoor air. Seven thickened blades deliver powerful and uniform airflow and are resistant to deformation. The fan operates smoothly with low vibration, ensuring high air volume while minimizing noise. Constructed from iron material for durability. Available in multiple sizes: 4 inch, 6 inch, and 7 inch. Easy to install, suitable for use in kitchens, bathrooms, offices, meeting rooms, restaurants, supermarkets, cinemas, internet cafes, workshops, and waiting halls. Item Name: Exhaust Fan Material: Iron Features: Strong Wind, High Suction Voltage: 22V Frequency: 50 Hz Size Details: 4 Inch Black, Diameter: 10cm/3.94" (Approx.), Length: 7.3cm/2.87" (Approx.) 6 Inch Black, Diameter: 15cm/5.91" (Approx.), Length: 15cm/5.91" (Approx.) 7 Inch Black, Diameter: 18cm/7.09" (Approx.), Length: 14cm/5.51" (Approx.) 4 Inch White, Diameter: 10cm/3.94" (Approx.), Length: 7.3cm/2.87" (Approx.) 6 Inch White, Diameter: 15cm/5.91" (Approx.), Length: 15cm/5.91" (Approx.) 7 Inch White, Diameter: 18cm/7.09" (Approx.), Length: 14cm/5.51" (Approx.) Notes: Due to differences in lighting and screen settings, the item's color may vary slightly from the images. Slight dimensional differences may occur due to manual measurement. Package Includes: 1 x Exhaust Fan