... shed fan 1)low voice,large air volume 2)high intensity,long service life cooling fan, industrial fan, ... durable.Belt Pulley: aluminium, light weight, high-strength.Bearing: France imported bearig, high intensity, low noise, long service life ... -1250125042000m3/h1.1KW1378X1378X450380V50HZRBRF-1400140055800m3/h1.5KW1536X1536X450380V50HZ RB series of fan for greenhouse, poultry shed and warehouse (CE approved) ...