The Ruck ISOR 125 E2 K 01 is a fully insulated 125mm single box fan designed for efficient and quiet ventilation. It features a backward curved centrifugal impeller housed in galvanized sheet steel with connection spigots using double lip seals for secure airflow. The swing-out fan unit allows easy maintenance. Powered by a robust single-phase AC motor with voltage control, it also includes an integrated thermal switch for safe operation. This fan is suitable for outdoor installation, providing reliable and durable performance in various environments.