Exhaust Fan EXHAUST FAN WITH LOUVER Model; TUHE-4 Material: galvanized sheet frame, aluminum vane DIAMETER OF THE FAN: 900X900 X 400(mm) TURNS: 495(r/m) AIR VOLUME (m3/h) : 29500(m3/h) NOISE: 56(dB) POWER: 0.37(kw) RATING VOLTAGE：380V WEIGHT: 43.5(Kg) INTRODUCE The optimal design and construction made by CAD/CAM, with high full pressure, big air volume, low noise, little energy-lost, stable running and being well for ages; the louver with pleasing shape can open and closed automatically, having dust-proof and water proof, with its double-function' cool breeze blowing and air draft, it Is the best cooling and ventilating product for factories etc.