The Elta STDL125-1EC‑R is a twin centrifugal box fan sized at 125mm, featuring an EC motor for efficient operation. It is part of a range offering seven standard sizes between 125mm and 500mm. The fan delivers airflow rates up to 1.740 m³/s and static pressures reaching 730 Pa. Designed for use in environments with temperatures up to +60°C, it features a redesigned casing to optimize airflow and reduce specific fan power consumption. The unit includes an auto changeover panel as standard and is internally acoustically lined to minimize breakout noise. Various spigot options are available for flexible installation. The STDL125-1EC‑R is engineered to provide energy-efficient ventilation with low power consumption.