An article storage facility comprising: an article storage rack having storage units arranged in a vertical direction and in a lateral direction, a pedestal, and an article transport device which is capable of transporting articles to each of the storage units in the article storage rack, wherein the article transport device includes a movable body movable in a rack lateral width direction of the article storage rack, a vertical movement guiding mast movable with respect to the movable body in the rack fore and aft direction of the article storage rack, and an article support which is movable to a projected position for article transfer to and from the storage unit and to a pulled back position away from the storage unit by a movement of the vertical movement guiding mast in the rack fore and aft direction, the article support being guided and supported by the vertical movement guiding mast for vertical movement, the article storage rack includes a front pair and a back pair of side frames spaced apart from each other in the rack fore and aft direction, the movable body has a rack fore and aft travel rail extending in the rack fore and aft direction for supporting the pedestal on which the vertical movement guiding mast is arranged to stand vertically to be movable along the rack fore and aft travel rail; and characterized in that the rack fore and aft travel rail and the movable body have ends, respectively, adjacent to the article storage rack in the rack fore and aft direction that are configured to be arranged in a space under the article storage rack defined lower than the lowest storage unit of the article storage rack between the front pair and the back pair of side frames in the rack fore and aft direction, and an end of the pedestal closer to the article storage rack in the rack fore and aft direction is configured to enter the space under the article storage rack when the pedestal is moved toward the article storage rack to place the article support to the projected position. an article storage rack having storage units arranged in a vertical direction and in a lateral direction, a pedestal, and an article transport device which is capable of transporting articles to each of the storage units in the article storage rack, wherein the article transport device includes a movable body movable in a rack lateral width direction of the article storage rack, a vertical movement guiding mast movable with respect to the movable body in the rack fore and aft direction of the article storage rack, and an article support which is movable to a projected position for article transfer to and from the storage unit and to a pulled back position away from the storage unit by a movement of the vertical movement guiding mast in the rack fore and aft direction, the article support being guided and supported by the vertical movement guiding mast for vertical movement, the article storage rack includes a front pair and a back pair of side frames spaced apart from each other in the rack fore and aft direction, the movable body has a rack fore and aft travel rail extending in the rack fore and aft direction for supporting the pedestal on which the vertical movement guiding mast is arranged to stand vertically to be movable along the rack fore and aft travel rail; and characterized in that the rack fore and aft travel rail and the movable body have ends, respectively, adjacent to the article storage rack in the rack fore and aft direction that are configured to be arranged in a space under the article storage rack defined lower than the lowest storage unit of the article storage rack between the front pair and the back pair of side frames in the rack fore and aft direction, and an end of the pedestal closer to the article storage rack in the rack fore and aft direction is configured to enter the space under the article storage rack when the pedestal is moved toward the article storage rack to place the article support to the projected position.