Boosted impeller fan blade for high-speed operation: The specially designed impeller fan blade maintains its shape even at high speeds, ensuring consistent and efficient airflow. This feature guarantees optimal cooling performance without distortion or decline in effectiveness. Anti-mosquito design with check valve: Equipped with a check valve, this wall exhaust fan acts as a barrier against mosquitoes and other insects. The check valve automatically opens and closes with airflow, helping prevent unwanted pests from entering your space. Enjoy a more comfortable environment. Advanced features: Includes a remote control for convenient operation. Offers adjustable speed settings through frequency conversion technology, allowing you to customize airflow and noise levels to suit your preferences. Easy installation: The wall-mount design allows for simple installation and saves floor space. Ideal for those seeking a practical ventilation solution. Model: 6 inches Rated voltage: 220 volts Rated frequency: 50 Hz Power: 5 watts Air volume: 240 cubic meters per hour Color: As shown Material: Plastic Package contents: 1 x Exhaust fan 1 x Remote control Note: Light reflection and differences in display screens may cause slight variations in color. Measurement may vary by +/- 1-3 cm. Product appearance and labeling may vary slightly by batch, but this does not affect functionality.