chicken shed fresh air ventilation fanModelHYA-800(29'')HYA-900(30'')HYA-1000(36'')HYA-1100(40'')HYA-1220(44'')HYA-1380(50'')HYA-1530(56'')Diameter biades (mm)7107509001000110012501400Blades rotational speed rpm660630610600460439325Motorrotational speed rpm1400140014001400140014001400air flow m³/h22000280003000032500380004400055800Total presure60657070735660Noise decibels≤60≤65≤70≤70≤70≤70≤70import power370W550W550W750W1100W1100W1500WRatde voltage380V380V380V380V380V380V380VHeight(mm)80090010001100122013801530Width(mm)80090010001100122013801530Thick(mm)400400400400400400400