The LB Fans LCA353418 is a long cased axial fan designed for commercial ventilation use. It incorporates a three-phase, 4‑pole motor with IP55 protection and Class ‘F’ insulation, supporting operation in ambient temperatures up to 54˚C. Many models in this range offer speed control via a transformer or inverter. The fan includes an IP55-rated terminal box and an adjustable polypropylene impeller set at the factory. It is suitable for environments with relative humidity levels up to 95% and is manufactured in compliance with BS EN ISO 9001:2015. Performance testing has been carried out to BS 848 parts 1 and 2 and ISO 5801 standards. This unit comes with a 2‑year guarantee, providing a reliable and efficient solution for commercial ventilation requirements.