The Elta SMB550/4 – 1AC is a robust 550mm mixed flow box fan designed for effective air movement in commercial and industrial settings. Featuring a 4‑pole, single-phase AC motor, this fan delivers impressive airflow rates up to 4.07 m³/s with static pressures reaching 796 Pa. Built to operate at temperatures up to +60°C, it ensures dependable performance across a wide range of applications. As part of a six-size range from 400mm to 700mm, the SMB550/4 – 1AC offers a compact and efficient solution for mixed flow ventilation requirements.