To achieve an inexpensive production and a simple movement with a higher safety and a simple structure by enabling filing and housing efficiently and orderly and easier selection work of an heavy object housed for higher working efficiency.

This rack is provided with an outer frame 10 and a rack component body 50, the upper end part 56 of which is supported on the outer frame 10 to let it run on a running path 20 disposed therebelow. The rack component body 50 is provided with a first rod body 54 and a second rod body 55 set on the running path 20 so as to be vertically extended being spaced at an interval longitudinally and a plurality of rack plates 52 which are arranged almost horizontally being spaced at an interval vertically to be mounted on the rod bodies 54 and 55.