The Elta STDL500-1EC is a 500mm twin centrifugal box fan engineered for high-efficiency ventilation and quiet operation. It belongs to a product range with seven standard sizes from 125mm to 500mm. This model delivers air volume flow rates of up to 1.740 m³/s and static pressures reaching 730 Pa. Designed for environments with operating temperatures up to +60°C, it features a redesigned casing to optimize airflow and minimize specific fan power consumption. The fan includes a standard auto changeover panel and internal acoustic lining to reduce breakout noise. Optional spigot types allow for flexible installation. The STDL500-1EC is ideal for applications requiring low-energy, high-performance ventilation.