The RUCK MPC T 250mm centrifugal box smoke fan MPC 250 D2 F4 T40 is designed for dual-use ventilation and smoke extraction applications. It features a backward curved centrifugal impeller and allows variable discharge direction to the right, left, or upwards. The fan housing is made from double-walled galvanized sheet steel with 25 mm mineral wool insulation. The IE3 motor is mounted outside the airflow and is frequency controllable. This model is certified as an F400 smoke extract fan, capable of operating at 400 °C for two hours and 200 °C during continuous use. The housing bottom is also designed with an integrated drain for practical maintenance.