This ER Series Eco Home ventilation system offers a maximum airflow of 63 to 650 Cubic-m/hr. This system protect your loved ones by maintaining the air quality of your home. Weiss intelligent technology protects from condensation while ventilating your home. This easy-to-install system features automatic program and manual mode. It is designed for house up to 250 sq-m and ventilates the whole home bringing dry, filtered air from the roof cavity. It features 150 mm EC mixed flow fan and built-in controller.