Type Axial Flow Fan Electric Current Type AC Mounting Ceiling Fan Blade Material Stainless Steel Place of Origin Shandong, China (Mainland) Brand Name ZR Model Number various Power 1100w Air Volume 44000m3/H Speed 439rpm Certification CE, CCC type Hanging exhaust fan blade material stainless steel Electric current type AC blades rotational speed 660rpm Size Large Type cowhouse exhaust fan Cover Material stainless steel size:1380*1380*420