A novel caster assembly with a horizontally orientated arm is attached to
a base plate of a rack during a travel state and a stored state. A
leveling foot with a flat portion and a non-flat portion is inserted
through a slot on the arm and a hole on the base plate such that during
the travel state, the horizontal orientated arm is in a fully extended
position, and during the stored state, the horizontal orientated arm is
in a non- extended position.