【Efficient and Powerful Wind】: Equipped with 7 metal reinforced wind blades, this extractor fan ensures efficient airflow with reduced wind resistance. The stable blades maintain their shape even at high speeds, providing a strong and reliable wind output.【Flexible Two-Way Air Supply】: Say goodbye to opening for ventilation. This extractor fan offers two-way air supply, allowing you to achieve effective ventilation without compromising security. Solve various ventilation problems with just machine.【long-lasting All-Metal Design】: The reinforced painted body of this extractor fan guarantees long-lasting durability. Its anti-compressive and shock-resistant construction ensures reliable performance. The all-metal design also provides erosion resista.