The LB Fans LCA503218 is a robust long cased axial fan engineered for high-performance airflow in commercial ventilation systems. Featuring a three-phase 2‑pole motor with IP55 protection and Class ‘F’ insulation, this fan is designed to operate reliably in demanding environments. Its factory-set polypropylene impeller has a 500mm diameter with an 18° blade pitch, ensuring efficient and consistent airflow delivery. Suitable for ambient temperatures up to 54˚C and relative humidity up to 95% R.H, the unit supports speed control via transformer or inverter for greater flexibility. Built to BS EN ISO 9001:2015 standards and performance tested to BS 848 parts 1, 2 and ISO 5801, the LCA503218 also comes with an IP55 terminal box and a 2‑year guarantee, making it a reliable solution for commercial ventilation needs.