A squirrel cage blower, also called a centrifugal blower or squirrel cage fan, gets its name from its resemblance to a squirrel cage or hamster wheel. The blower uses curved blades to turn the air, which then propels the air outward. These types of blowers typically offer high efficiency and see use in a variety of applications, often industrial applications, to move air and gases. King Electric’s WHFC model boasts a whisper-quiet squirrel cage blower.