... , laundry and other workshops with high temperature.2. Civil fields: net bars, stores, supermarkets, mess hall, food markets, waiting-rooms and ... , etc. General Information :1.Availbale in 58" & 42" &30 "sizes wholesale poultry ventilation fan 2.The new 58” high performance SMC ... 560/720rpm 20000m3/h ≤62db 0.55kw380v 106*106*55CM Wholesale Poultry Ventilation Fan (OFS-146SL)