The LB Fans LCA353220 is a long cased axial fan designed for commercial ventilation applications. It features a 350mm adjustable polypropylene impeller set at 20° and operates with a three-phase, 2‑pole motor. The motor is IP55 rated and uses Class F insulation, suitable for ambient temperatures up to 54˚C. Most models in this series allow speed control via a transformer or inverter. The fan comes 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 is supplied with a 2‑year guarantee.