Boosted Impeller Fan Blade for High-Speed Operation: The specially designed boosted impeller fan blade of exhaust air blower maintains its shape even at high speeds, ensuring consistent and efficient airflow. This feature guarantees optimal cooling performance without any distortion or decline in effectiveness. Anti-Mosquito Design with Check Valve: Equipped with a check valve design, this air vent window wall fan acts as an effective barrier against mosquitoes and other insects. The check valve automatically opens and closes with the wind, preventing unwanted from entering your living space. Enjoy a comfortable and mosquito-free environment all day long. Advanced Features: Equipped with a remote control for convenient operation, this fan offers adjustable speed settings through its innovative frequency conversion technology, allowing you to customize airflow and noise levels to suit your needs. Easy Installation: The fan's wall-mount design makes it easy to install, providing a seamless fit into any room without taking up floor space. Ideal for looking for a practical ventilation solution. Model: 6 inches Rated voltage: 220 volts Rated frequency: 50 Hz Power: 5 Air volume: 240 cubic meters per hour (The product appearance and printed words depending on the batch, but this does not affect use) Color:As Shown Material:plastic Package Contents: 1 * Greenhouse Fan 1 * remote control Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.