The Elta STDL315-1EC is a 315mm twin centrifugal box fan designed for energy-efficient air movement and quiet operation. It forms part of a product range that includes seven standard sizes from 125mm to 500mm. This model delivers air volume flow rates up to 1.740 m³/s and static pressures of up to 730 Pa. It is suitable for use in environments with temperatures up to +60°C. The fan features a redesigned casing that enhances airflow performance while lowering specific fan power. Standard features include an auto changeover panel and internal acoustic lining to suppress breakout noise. Optional spigot types are available for versatile installation. The STDL315-1EC is ideal for low-energy, high-performance ventilation applications.