The LB Fans LCA351424 is a long cased axial fan designed for commercial ventilation applications. It includes a 350mm adjustable polypropylene impeller set at 24° and operates with a single-phase, 4‑pole motor. The motor is IP55 protected and features Class F insulation, suitable for ambient temperatures up to 54˚C. Most models in this range allow speed control via a transformer or inverter. The fan is equipped with an IP55-rated terminal box and is compatible with relative humidity levels up to 95%. Manufactured to BS EN ISO 9001:2015 standards, its performance is tested according to BS 848 parts 1, 2 and ISO 5801. This model comes with a 2‑year guarantee.