The LB Fans LCA401216 is a long cased axial fan designed for commercial ventilation systems. It features a single-phase, 2‑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 control through a transformer or inverter. The fan is fitted with an IP55-rated terminal box and a factory-set adjustable polypropylene impeller. Suitable for relative humidity levels up to 95%, it is manufactured in accordance with BS EN ISO 9001:2015 standards. Performance testing has been carried out to BS 848 parts 1 and 2 and ISO 5801. Supplied with a 2‑year guarantee, this fan provides a dependable and efficient solution for commercial ventilation.