Patent attributes
A wall member that covers lateral sides of an article storage rack includes a main wall portion that is installed in an orientation in which it extends along a vertical direction at a position that is spaced apart upward from an installation floor, and a sub-wall portion that is installed at a position that is spaced apart upward from the installation floor. An inlet port is formed at an upper end of the main wall portion, a first space surrounded by the main wall portion and a second space directly below the sub-wall portion are in communication with each other, an outlet port is formed below an end portion of the sub-wall portion on a second side, and an end portion of the sub-wall portion on a first side is connected to a lower end of the main wall portion in a state in which the flow of air between the sub-wall portion and the main wall portion is restricted.
