An advantage of Air casters is that very little free space is needed to move a machine. If an Air caster can be integrated under the machine, often only 10 mm free space is necessary. Even if there is a need to slide a complete module underneath the object to be moved, only one inch of space is needed in many cases.
If you want to use Air casters for multiple setups, but do not want to integrate the casters, it can be hard to reach the Air caster locations under the machine or seating stands. Aerofilm has developed an Air caster plank system for this purpose.