The Ruck ISORX 250 EC K 01 is a fully insulated 250mm single box fan designed for quiet, efficient, and dependable airflow. It features a backward curved centrifugal impeller built into a galvanized sheet steel housing for durability and consistent performance. The swing-out fan unit provides straightforward access for maintenance, while the external rotor EC motor offers stepless, energy-efficient speed control. Internal electronic temperature monitoring enhances operational safety and reliability. Suitable for outdoor installation, this fan is ideal for commercial, residential, and general ventilation applications requiring low noise and stable airflow.