1.Raw mayerial 275g/m2 hot-dip galvanized steel
2.10 pcs narrower shutter, and less resistance
3.430SS(or 304SS) widened Blade
4.Anti vibration bracket with shock-absorbing plastic pad
Wall-Mounted 220V/380V Industrial Exhaust Fan with 304SS Blades Customizable OEM/ODM for Chicken Houses and Greenhouses