The Ventur JETLINE-250 ECOWATT is an in-line mixed-flow fan for circular ducts in general ventilation systems. The 250 model delivers a maximum airflow of 1270 m³/h and uses an efficient EC motor with 0–10 V control, plus an integrated potentiometer in the terminal box. Construction features include a galvanized steel housing, injected plastic impeller, guide vanes, and an outlet diffuser to improve efficiency and reduce noise. The unit is supplied with a mounting bracket, inlet and outlet gaskets, and a Silent-block between motor and bracket to limit vibration. Protection is rated IP44. Nominal speed is 2740 rpm, with typical sound pressure around 41 dB(A) measured at 1.5 m. Connection diameter is 245 mm to suit nominal 250 mm ducting.