* Window Mount Range – Front Shutter Type with Airflow Shutter is designed for direct exhaust to outdoor to maintain the best indoor ventilation and air circulation. * The fans are recommended for domestic and commercial premises, e.g. bathroom, bedroom, living room, kitchen, lavatory, meeting room, office, computer room, restaurant, classroom, hospital ward, etc. * Durable and reliable Shaded Pole Motor is adopted. * Front Shutter is applied to block outdoor dust and insects, and maintains indoor temperature * Convenient Installation Clip for easy and safe indoor installation.