poultry exhaust fan 1.GRP outline border,strong anti-corrosion, ... 3.High quality 4.Low failure rate Poultry exhaust fan Description:Material of fan frame: glass fiber reinforced plastics(GRP)1 ... shutter is PVC,also resist corrosion and airslake. Fan blade is made of nylon and fiber material,have ... ) Low failure rateBecause of the electric motor and fan blade connected directly ,it has no belts,belt pulley ...