The LB Fans LCA353416 is a long cased axial fan designed for commercial ventilation applications. It features a three-phase, 4‑pole motor with IP55 protection and Class ‘F’ insulation, capable of operating in ambient temperatures up to 54˚C. Many models in this series allow speed adjustment through a transformer or inverter. The fan includes an IP55-rated terminal box and a factory-set adjustable polypropylene impeller. It is suitable for environments with relative humidity levels up to 95% and is manufactured under the BS EN ISO 9001:2015 standard. Performance has been tested according to BS 848 parts 1 and 2, as well as ISO 5801. This product comes with a 2‑year guarantee and is a reliable solution for efficient commercial ventilation.