... galvanized steel, colour: optional10) Intake and exhaust air system: 2 units, in total 4×4KW ... air, model YDW4.5L, air capacity is 12500m3/h for each fan; 2×7.5KW centrifugal fans for exhaust air, model TAE-500H, belt ... -drive, air capacity is 20000M3/H for ... hour meter, limited-temperature device.15) Free air speed: >=0.25m/s16) Total Power:34. ...