The Ruck ISOR 250 EC K 01 is a fully insulated 250mm single box fan designed for quiet and efficient ventilation in demanding environments. Featuring a galvanized sheet steel housing, the unit includes connection spigots with double lip seals to maintain an airtight system. Its sound-dampened centrifugal impeller, built with a backward curved design, ensures smooth and low-noise airflow. The swing-out fan unit allows quick and easy maintenance access. Equipped with an external rotor EC motor, the fan provides stepless control for precise and energy-efficient operation. Internal electronic temperature monitoring enhances protection and long-term performance. Suitable for outdoor installation, this model is engineered for dependable, high-efficiency air handling across various applications.