The Elta SQU82/500-EC‑3 is a powerful and energy-efficient centrifugal box fan from the Qube series, designed for use in large-scale commercial and industrial ventilation systems. Featuring an 820mm box size and a 3‑phase EC motor, this model provides variable speed control and efficient airflow with reduced energy consumption. Its modular design includes interchangeable double-skinned panels and durable painted aluminium corners, enabling flexible installation with options for straight-through or 90° outlet airflow. Suitable for ambient air temperatures up to 40°C when using EC motors (50°C for AC versions), the SQU82/500-EC‑3 is a reliable and adaptable solution for demanding ventilation environments.