Abstract: An electrically-operated shiftable article storage device in which a plurality of shiftable article storage units adapted for movement in a direction normal to the article storage faces thereof to form a plurality of article handling aisles therebetween are normally arranged closely adjacent to each other to leave a limited space corresponding to at least one article handling aisle, and at least one of the article storage units is moved in either direction to form said article handling aisle opposite to the article storage face of a desired one of said article storage units so that articles can be handled in said article handling aisle.