The Ruck 280mm EM DUO EC Twin Box Fan is designed for quiet and reliable ventilation. It features an efficient diagonal fan with redundant operation and aerodynamically optimized design for maximum airflow. The fan is housed in a soundproof galvanized sheet steel casing and includes a high-efficiency EC motor with stepless control. Integrated ETAMASTER technology ensures high efficiency, and the fan is suitable for outdoor installation, making it ideal for applications that require durable, low-noise ventilation.