The Ruck ISOR 125 EC K 01 is a fully insulated 125mm single box fan designed for quiet and efficient ventilation. It features a backward curved centrifugal impeller housed in durable galvanized sheet steel, along with connection spigots fitted with double lip seals for secure airflow. The swing-out fan unit allows easy access for maintenance. This model is equipped with an external rotor EC motor that provides stepless speed control and includes internal electronic temperature monitoring for added safety. Suitable for outdoor installation, the fan delivers reliable and energy-efficient performance across a wide range of ventilation applications.