... , automatic air shower, which is composed of case, fan(s), filter(s), nozzles and electric control system, is photoelectrically controlled, electronically ... . The materials for case can be chosen from all cold rolled steel plate with powder coated, stainless steel inside and ... run(r/min)280028002800NozzLe in stainless steel16PCS24PCS32PCSWind speed(m/s)>=25-30>=25-30>=25-30Noise level(dB)<62< ...