... die-cast aluminum impeller, sizes from 200 to 810mm, available in 50/60Hz, air volume from 530 to 20038m3/h ... in equipment with short bell mouth, high flexibility by variation of blade angle and speed of motor, available in both ... air row directions as well as 60Hz.5. ApplicationVentilation, air conditioning, heating technology, drying, cooling, agriculture. Axial fan with ...