This 40" 3 Phase Box Fan is used in close house chicken coops, relatively used for short cages (under 60m) or can be used as an intermittent blower We import this Box Fan directly from China with the best quality This Box Fan is made of galvalum for the body and aluminum for the shutter This 40" Box Fan is used to remove ammonia in the cage and circulate fresh air into the cage through the celldeck This blower is usually used as an intermittent box fan in chicken coops. Intermitten is used when the chicken enters the brooding process 40” Box Fan Specifications: - Dimensions: 110cm x 110cm x 40cm - Motor Nosch 1 Phase 0.75 KW