High Performance: Exhaust Airflow 500 m³/h(297 CFM), Intake Airflow 380 m³/h(226 CFM) | Noise: 43 dBA. 30-watt low power, which makes the fan powerful and energy-saving. Reverse Exhaust: This window fan is a 2-way linkage type ventilation system, it not only puts air to the outside but also draws in air to the inside.
eBay