The Admore A-SC20 8" Auto Shutter Round Exhaust Fan is designed for effective ventilation in both residential and commercial settings. Specifically engineered for glass window and wall installations, this exhaust fan provides a direct pathway for air removal to the outside, ensuring a fresher and more comfortable environment. Automatic Shutter System: Equipped with internal mechanical backdraft shutters, the A-SC20 prevents air from re-entering the room when the fan is not in operation, improving energy efficiency and maintaining indoor air quality. Durable Construction: The fan features a robust round PVC case and standard PVC impellers, ensuring long-lasting performance. The 99.9% copper winded motor provides reliable and durable operation, minimizing the need for frequent replacements. Energy Efficient Motor: The high-efficiency, thermally-protected motor operates on 220-240V/50Hz with a power consumption of just 29W. This makes it an energy-conscious choice for continuous ventilation needs. Quiet Operation: With a noise level of only 39dB, the A-SC20 operates quietly, minimizing disruption in living and working spaces. Easy Installation: Designed for glass window mounting, the fan comes with window fixing screws for straightforward installation. The cut-hole size is between 210mm and 230mm, making it compatible with standard glass openings. With an airflow of 248 m³/h (145.96784 CFM), the Admore A-SC20 is an excellent choice for maintaining optimal air quality in your home or business.