The LB Fans LCA351422 is a long cased axial fan suitable for commercial ventilation systems. It features a 350mm adjustable polypropylene impeller set at 22° and operates with a single-phase, 4‑pole motor. The motor is rated IP55 and uses Class F insulation, allowing operation in ambient temperatures up to 54˚C. Most models in this series support speed adjustment via a transformer or inverter. The fan comes with an IP55-rated terminal box and is suitable for environments with relative humidity up to 95%. Manufactured according to BS EN ISO 9001:2015, its performance is tested to BS 848 parts 1, 2 and ISO 5801 standards. This model is covered by a 2‑year guarantee.