Duct Air cooler or ductable air cooler is a Impleller type which increases the speed and volume of an air stream with the rotating inpellers. The main advantage of duct cooler is by changing the angle of the blades, a blower will be able to push air in any direction you want it, you can enlarge the duct length to where ever you want.

Duct Cooler. Duct coolers are dual purpose coolers: meant for keeping inside the premises or can be fitted through window. They are high performance air coolers and because of their sleek design they consume lesser space. generally it makes of metal and fiber both.