Features 1. Multifunctional Powerful Mute Exhaust Fan: Upgraded fully enclosed pure copper motor (speed up to 2800r/min) provides fast fume extraction and ventilation, helping maintain fresh and comfortable indoor air. 2. Durable Construction: 7 thickened blades deliver stronger and more uniform airflow, resistant to deformation. Operates stably with minimal vibration, ensuring high air volume while reducing noise. Built for long-lasting performance. 3. Easy Installation: Includes all necessary mounting hardware and installation instructions for quick and simple setup. Can be installed without professional help. 4. Ventilation Fan: Equipped with safety protective grills tightly designed to prevent accidental contact. The grill is secured with four screws to minimize shaking and noise, and is detachable for easy cleaning. 5. Wide Application: Ideal for efficient indoor ventilation in kitchens, bedrooms, offices, basements, warehouses, garages, and other areas requiring continuous or regular air circulation. Specifications Material: Alloy Color: Black, White Size: 15 x 15 cm, 14 x 18 cm, 15 x 20 cm, 15.5 x 24.5 cm Weight: 1200 g, 1550 g, 2050 g, 2700 g Power: 40W, 50W, 80W, 100W Package Includes: 1 x Kitchen Exhaust Fan