The RUCK MPC T 225mm centrifugal box smoke fan MPC 225 D2 F4 T40 is designed for smoke extraction and general ventilation applications. It includes a backward curved centrifugal impeller and allows variable discharge direction to the right, left, or upward. The unit is built with a double-walled galvanized sheet steel housing insulated with 25 mm mineral wool. The IE3 motor is mounted outside the airflow and is frequency controllable. This model is certified as an F400 smoke extract fan and supports dual-use operation, handling 400 °C for two hours and 200 °C during continuous operation. The housing bottom also features an integrated drain for maintenance practicality.