The LB Fans Long Cased Axial Fan LCA1253420 is designed for demanding commercial ventilation applications, featuring a three-phase 4‑pole motor with a 20° pitch. The motor is IP55 protected and Class F insulated, providing reliable operation in ambient temperatures up to 54°C. Most models are speed controllable via transformer or inverter for adjustable airflow performance. The fan includes an IP55-rated terminal box and a polypropylene impeller that is factory set but fully adjustable. Suitable for environments with relative humidity levels up to 95%, this unit is manufactured in compliance with BS EN ISO 9001:2015 standards. Performance is verified to BS 848 Parts 1 & 2 and ISO 5801. Each model comes with a 2‑year guarantee, ensuring long-term reliability and durability