Poultry equipment 50'' exhaust fan

Poultry equipment 50'' exhaust fan, the characteristics are as follows: 1) Usedas poultry/greenhouse/ livestock equipment 2)large air blowing rate 3)lower noise and power consumption 4)Stable operation, long duration. 5)outer size can be: 1380x1380x400mm,1220x1220x400mm, 1100x1100x400mm, 1000x1000x400mm, 900x900x400mm, 820x820x400mm and so on. 6)motor: hig effeciency and enger saving with protection grade: IP55, Insulation class: F.