50 butterfly cone fan

50 butterfly cone fan
North&Husbandry is a leading exhaust system manufacturer/Supplier. be designed to ensure an optimum house climate, supplying fresh air .
50" & 36" box fan with centrifugal system features
NFAN Type poultry farm house exhaust ventilation fan. All spare parts are made of durable material, all frames with zinc coating 275g/㎡.
Motors with high efficiency,low consumption,pass simulation test in different farm conditions.
Patent automatic tension-belts maintain constant tension effect and air volume.
NFAN Type poultry farm house exhaust ventilation fan. Heavy duty and self-aligning cast iron bearing,with the pre-lubricated.Special designed sealing structure for moisture-proof and dust-proof.
Shutters are controlled by opening system.Comparing with hammer fan,shutters could be opened at 90°,less air resistance.The opening system is made of high strength nylon,good corrosion resistance.NFAN Type poultry farm house exhaust ventilation fan.
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